Call me paranoid, but the link in the other post goes to forums w/the last post 5 months ago.. (Unless im losing it and missed 20 pages or so)... I am going to XDA to do a little more research... i'd rather just ADB it if its not confirmed working... :-) (Im used to SBF for THE Droid, and of course command lines dont scare me, LOL). :-)
Dont really care about unrooting, unless phone loses data every day (so far it has).
Unless there is more than one unofficial razrbootstrap floating around, that's the on I used. I used z4 to unroot my phone and it worked fine. Luckily all I did was do a factory format in bootstrap, after the backup didn't work I shut the phone off, restarted holding power/up/down and got in to factory recovery. Did a factory format and that went fine. Reinstalled superuser and z4. Ran z4 to unroot, took all of 2 seconds, then did another factory restore to erase anything root related. Going to wait until a sbf/fxz file is available.