Credit to Dan Rosenberg for his work on this exploit. Link is here - Security Research by Dan Rosenberg
It has been reported to successfully work on the Droid Razr running the .173 build...this should work for those of you who want root after the update or if VooDoo didn't protect / restore root.
Standard Disclaimer - DroidForums.net, Dan Rosenberg or anyone else is responsible if this does not root your device or bricks your device. You are proceeding at your own risk.