Torn up caliper, ever seen this?

[Supercharged111]

The damage appears to be where the rotor spins, as though an oversized rotor were once fitted with this caliper? I must have noticed this last year and opted to ignore it, no way it happened all in 2015. Odd, but where the pads sit appear to be OKish. I fitted a replacement caliper today, but it was bent and acted like a parking brake. Donor car must have been whacked on that corner. I reinstalled the torn up caliper as it holds fluid and lets the car roll for now.

http://i198.photobucket.com/albums/aa70/supercharged111/Camaro/20160117_210253_zps1bav1kyy.jpg (http://s198.photobucket.com/user/supercharged111/media/Camaro/20160117_210253_zps1bav1kyy.jpg.html)
http://i198.photobucket.com/albums/aa70/supercharged111/Camaro/20160117_210308_zpsm7dwxuls.jpg (http://s198.photobucket.com/user/supercharged111/media/Camaro/20160117_210308_zpsm7dwxuls.jpg.html)
http://i198.photobucket.com/albums/aa70/supercharged111/Camaro/20160117_210223_zpsipmvibcz.jpg (http://s198.photobucket.com/user/supercharged111/media/Camaro/20160117_210223_zpsipmvibcz.jpg.html)

Note my inability to really capture how messed up this thing really is. The junk replacement caliper had some minor markings that looked like the beginnings of what I attempted to picture as well. Pad wear from last year matches the not-messed-up passenger side.