Had to send my X2 in for repair because it was completely messed up. Motorola switched out the main circuit boards, and also flashed it with the newest 2.3.5/1.3.418 software (NOT the dev .412, which is rootable), and now none of the root exploits work; obviously there was no way to use Voodoo since they used an SBF. I tried motofail, zergRush, and other exploits but none have achieved root.
So, now comes the waiting game. I know Motorola will implement this into other phones. I'm sure the ICS upgrade for the RAZR will kill root somehow too.