did this just fall over ?
what did it land on, point of impact, mirror ? handalbar end?
are both bars turning right or just one?
id expect it is probably a bent bar from the impact/ taking the weight as it landed, being as youve checked the position under the top yoke?!
its possible i guess that the alignment can be put off from a fork slipping in the yoke but not likely from just falling over, maybee just check each fork has the same number of rings showing at the top yoke.