Pictures would greatly help. My guess is that you are OK, (hard to tell for sure w/o pics), and remarking the centerline and go from there. Might end up loosing a few #'s due to narrowed limbs, but definitely not trash. Unless your form is set up for zero slide, marking the centerline before glue up doesn't do much but add some frustration and extra time. I always mark after glue up.
Good luck, it won;t be your last bow, so make notes you can refer to on the next one. Relax and go slow, there really isn't all THAT much you can do to completely trash a bow if you go slow and think it through.
Mike