A Multi-step step process going from JB to back to ICS, Rooting and then going back to JB 4.1.1. Not as simple and direct as one would hope, but if you gotta have it now and can't wait for a MORE SIMPLIFIED JB root ...
Util: DROID RAZR HD Utility 1.10 [Windows] - xda-developers
WATCH THE VIDEO BELOW BEFORE ATTEMPTING
** Version 1.10 of the utility includes the updated SU binaries.
** Thanks to mattlgroff and Original doBo **