[JCP636]

my handle bars were recently off a little bit too and my mechanic told me just to bang the wheel against a curb real hard a couple times. Sure enough it worked. They're still not 100% straight but its barely niticeable and im afraid to make it go more in the other direction. I know this is an unproffessional technique and a lot of you wouldnt do it with your bike but hey it worked. Just throwin my two cents in.
And also i never laid the bike down they just became off center by themselves i guess from riding.