Dodgy Handling Post-Crash - Any Ideas Why?

How closely have you looked at the frame? You sure it's all straight? No crinkles in the paint? Run a straight edge along the fork tips and stuff to check alignment. Also, properly pull down the headset and inspect. Could be crushed bearings or broken race or similar.

No crinkles, no earthquakes. I was under the impression that if it was the forks the bike would only pull to one side, now I reckon it's probably a slightly off dropout though. I don't "has" the tool but I did read a description somewhere of how to do a ghetto check using an old axle and a couple of locknuts... so I'm gonna try that first. I was really hoping it wasn't the forks too...meh. Thanks for all the replies!