flash the shipped vzw rom back, if there are no issues your phone is fine. there is nothing (that I know of) that can permanently break your phone that you can do without using any kind of CDMA workshop or similar...
shipped VZW:
Shipped versions (exe format signed):
Verizon:
Leaked version (pre-release):
ftp://ppcgeeks.com/Raphael/Stock%20R...51064_Ship.exe