[ROOT with motofail] Stock Ginger Blur 2.3.6 root success.
This root method(motofail) for Droid-4.(by Dan Rosenberg)
But our Razr(Motorola Korea Razr) is worked well. 
My Razr was root impossible, while one month.
[Test Status]
65.3.106.XT910.SKT.en.KR
65.3.106.XT910.KT.en.KR
65.1.21.XT910.AsiaRetail.en03
651.167.20.xt910.retail.en.eu
651.150.1 retail.en.eu
2.3.6 65.1.40.XT910.AsiaRetail.en03
651.167.3370.XT910.Brasil.en.BR
651.167.21 en_eu
65.1.40XT910.MERetail.en.06
651-167-spd-ird-40
651-167-19.XT910T-Mobile.en.EU
651.167.26.XT910.retail.en.eu
651.167.22.xt910.retail.en.fr
65.1.21.XT910.Optus.en.AU
651.167.19.XT910.retail.en.EU
6.5.1-167_DHD-14_M2-5
6.12.173.XT912.Verizon.en.US
651.73.30.XT910.Retail.en.Eu
65.1.40.xt910.asiaretail.en.03
(It seems that most of all work!!)
Please check with another Razr and write reply!
[Root - only windows]
1) Install USB Drivers
2) Download and Extract Package
3) Enable debugging on device. Settings -> Application -> Development -> Tick USB Debugging
4) Connect device to PC
5) execute run.bat (location for extract package)
6) Enter is begin root work. (approximately 2 times reboot)
Enjoy
[UnRoot]
DoomLords UnRoot method still works.
[Original link]
http://vulnfactory.org/blog/2012/02/...ty-experiment/
[Credit]
Dan Rosenberg (@djrbliss)
Good luck with Razr!!
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[Edit]
Sorry, mattlgroff.
You have already written on general thread. I did not see it. 
mattlgroff's thread:
http://forum.xda-developers.com/show....php?t=1492708