There are only 2 options I know of. One is swerve/brake and try to cause as little damage possible to yourself and others. The other is slam the brakes and hit it head on so you don't kill somebody else.
So far I've had cats, dogs, squirrels, opossums, frogs, gophers, groundhogs, chipmunks, deer, goats, sheep, chickens, mailboxes, garbage cans, and christmas trees jump out in front of me. Don't ask, I live in BFE. Anything can happen out here.
Sounds like you probably bent the flange pretty good. Your best option is going to be welding where it broke, since metal stretches when it bends. Good luck.
------------------
Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch 