Are you familiar with JFGI? Here's what my Google search found on my 5 minute break. Just going off the summaries shown in the Google search as I'm on the phone and it's slow. These things came up in the "P22 cracked frame face" search and appeared from the summaries to be on point. My apologies if not all of them recount a shooter getting hit in the face but showed up as hits in the quick & dirty research. Shall we start with an incident submitted on NES?
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=1&cad=rja&sqi=2&ved= 0CCAQFjAA&url=http%3A%2F% 2Fwww.northeastshooters.com% 2Fvbulletin%2Farchive%2Findex.php%2Ft-159759.html&ei= bQlSUOTUBJGs0AGM9IGQDA&usg= AFQjCNHIMOL8QNMeD-ZsWK29QLyaWUKNnQ
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=18&cad=rja&ved= 0CFoQFjAHOAo&url=http%3A%2F% 2Fwww.carolinashootersclub. com%2Fthreads%2F64722-Walther-P22-Broken-slide&ei=MAlSUMOpBKrr0gG6x4GoCQ&usg= AFQjCNHrcNH2P72Nply5lgXJYZSnZLxvNg
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=17&cad=rja&ved= 0CFEQFjAGOAo&url=http%3A%2F% 2Fwww.migunowners.org%2Fforum% 2Farchive%2Findex.php%2Ft-74984.html&ei= MAlSUMOpBKrr0gG6x4GoCQ&usg= AFQjCNHaSIbyt7cepXAwNP9n2V73AOV1Aw
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=6&cad=rja&ved=0CD0QFjAF& url=http%3A%2F%2Fnorthernutahgunclub.com% 2Fviewtopic.php%3Ff%3D3%26t%3D69&ei= 4whSUKvwN46M0QHc14HIAQ&usg= AFQjCNGI1YNVUzJXnxrDfqW01JmfI_Ad4Q
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=26&cad=rja&ved= 0CEUQFjAFOBQ&url=http%3A%2F% 2Fwww.pirate4x4.com%2Fforum% 2Farchive%2Findex.php%2Ft-977120.html&ei= tghSUMblJerv0gG2kIA4&usg=AFQjCNGdw0p-C4WOBD1tsYsR3HE5HSTLwA
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=24&cad=rja&ved= 0CDUQFjADOBQ&url=http%3A%2F% 2Fwww.calguns.net% 2Fcalgunforum%2Farchive%2Findex.php%2Ft-163362.html&ei=tghSUMblJerv0gG2kIA4&usg= AFQjCNGhTCN0Dl6b1CNV9J5arQD6H6_REA
And here are a bunch more that reference slide failure, but not apparently the shooter getting whacked by the slide.
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=1&cad=rja&ved=0CCIQFjAA& url=http%3A%2F%2Fwww. waltherforums.com%2Fforum% 2Fp22%2F19573-broken-slide-p22-7.html&ei= HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNGbCgwnc8TgHjN02IJs7Co02U3p-A
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=1&cad=rja&ved= 0CCkQrAIoADAA&url=http%3A%2F% 2Fwww.waltherforums.com% 2Fforum%2Fp22%2F22620-p22-slide-question.html&ei= HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNFppD6inoqmX0kGoQXWQ1e7KR6spw
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=1&cad=rja&ved= 0CCoQrAIoATAA&url=http%3A%2F% 2Fwww.waltherforums.com% 2Fforum%2Fp22%2F18391-cracked-slide.html&ei= HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNHxrEwv8urMZB7g1VMnXpP4lqkgWQ
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=1&cad=rja&ved= 0CCsQrAIoAjAA&url=http%3A%2F% 2Fwww.waltherforums.com% 2Fforum%2Fp22%2F16146-p22-crack-slide-others-have-come-apart.html&ei= HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNHQS7jfuMmvuY2gJ2KQW1kHyteBqQ
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=2&cad=rja&ved=0CDIQFjAB& url=http%3A%2F% 2Fthefiringline.com%2Fforums% 2Fshowthread.php%3Ft%3D172363& ei=HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNHaJ15EyUx_O7sk5LUGAdTq-PFubw
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=2&cad=rja&ved= 0CDkQrAIoATAB&url=http%3A%2F% 2Fthefiringline.com%2Fforums% 2Fshowthread.php%3Ft%3D429623& ei=HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNHYrKCdHdsBydAsNDjg-hCEFUgOAQ
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=11&cad=rja&ved=0CG8QFjAK& url=http%3A%2F%2Fwww. thehighroad.org%2Farchive%2Findex.php%2Ft-567240.html& ei=HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNE3mFSoj1HqAAVifZ5C8Um7Fe2XBw
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=12&cad=rja&ved=0CHgQFjAL& url=http%3A%2F%2Fwww.ar15.com% 2Farchive%2Ftopic.html%3Fb% 3D5%26f%3D27%26t%3D114106&ei= HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNHmO6xTwemlHnGtnJlg-pyPxpwnGA
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=13&cad=rja&ved=0CH8QFjAM& url=http%3A%2F%2Fwww. defensivecarry.com%2Fforum%2Fgeneral-firearm-discussion%2F62913-p22-slide-cracked-another-one.html&ei= HAhSUPT6LcPm0QHj0ICYDQ&usg= AFQjCNGw7MdnbjUSGF1Rploz3pQul6n92A
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=13&cad=rja&ved= 0CCsQFjACOAo&url=http%3A%2F% 2Fgunnuts.net%2F2011%2F11%2F22%2Fsig-mosquito-slide-cracks%2F&ei= hghSUKW9O6fq0gHu7YGAAQ&usg= AFQjCNFZNtaLF5he8Iy1GMAXgDiwAZFnjA
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=16&cad=rja&ved= 0CEAQFjAFOAo&url=http%3A%2F% 2Fwww.saysuncle.com%2F2008% 2F09%2F29%2Fp-22%2F&ei= hghSUKW9O6fq0gHu7YGAAQ&usg= AFQjCNGvWriAiLFIvJeyLt5fy96SN-kotQ
http://www.google.com/url?sa= t&rct=j&q=&esrc=s&source=web& cd=10&cad=rja&ved= 0CGwQrAIoAjAJ&url=http%3A%2F% 2Fwww.waltherforums.com% 2Fforum%2Fp22%2F18612-p22-went-bang.html&ei= 4whSUKvwN46M0QHc14HIAQ&usg= AFQjCNFbbFQ2PaFyt7oA9-SfUj-MnpcMGw