I agree with pp.
It seems your OB is setting you up with doomsday scenarios. The 1% statistic is extremely skewed and they never mention that even women with no prior cesarean are at risk for uterine rupture. In my own personal research, if you go into labor spontaneously the risk is less than half a percent. The risk only increases if you induce and even that, at 1%, that's 99% chance of no complications whatsoever.
As far as the brain damage, that happens in a small percentage of the 1% in which they have a serious rupture.
Look into the complications of a cesarean. They are greater, just not so widely known because c-sections have become so common while VBACs are relatively new and therefore get more attention. But there ARE c-section complications (not that recovery from a vaginal birth is glorious).
Birth is a risk. Period. Whatever path you take, there are risks. Regular vaginal, VBAC, or cesarean (repeat or not). The best thing to do is to educate yourself on ALL of them and make the best choice for you.