Sure you can, just get the correct zip file (XDA Developers is a good source), put it onto your SD Card and boot the phone into recovery mode. It'll find the file, install it and then you must refuse all updates.
That'll work AFAIK for any android phone.
PS, glad you're happy with the Rezound, I looked at it but I'd really miss the kickstand.....
Never had a BB, but I'm guessing it was easier to roll back. But, you're right you can roll back on Android (without root), at least I was able to on the Thunderbolt as I mentioned above. Of course that process wipes the device as it reloads the entire system from scratch and then the biggest issue is blocking OTA's, which unfortunately requires root to do.
Myself, I also couldn't give up the kickstand, not happening (don't like cases, so kickstand cases are a no go). Also, I've compared the Rezound to the Thunderbolt many, many times and other than the screen, the Thunderbolt always comes away the winner for me and it has much better build quality IMO. If something were to happen to mine (no insurance or extended warranty), I'd go to my local Best Buy (I've checked, they still have em) and get another even at full retail. That's how strongly I feel about this phone.
Anyway, I'm really curious how Jude's Rezound is working. Sounds like she had hardware issues with the Thunderbolt as is detailed in this post I found on Droidforums.net and which also has some really interesting points regarding the whole data drop issue:
http://www.droidforums.net/forum/dr...s/218137-why-my-lte-device-dropping-data.html
"Why is my LTE device dropping in data.
1) If the device is not staying connected and constantly dropping data it could be a hardware issue.
Solution: Change out devices. Try doing an exchange and if you still experience constant drops you may need to look at swapping to a different handset all together (ie from Nexus to razr).
2) 4g has been working fine but lately I am getting no connection, mms fails, and sometimes calls will not connect
Solution: Swap out sim cards.
3) My 4g works great but out of no where it drops off for 2 mins.
Solution: It is designed that way. Talked to an engineer and the idea is that if a tower gets congested it switches you to another tower. That momentary swap causes you to momentarily lose data.
But that did not happen before. More and more people are buying lte devices causing more congestion. The idea of switching people from tower to tower is designed so you do not lose data completely or for long periods of time. I am playing with at&t lte and I would rather lose data for 2 mins once or twice a day than 20 mins.
But its happening more than twice a day. Call a tech they may need to reset the provisions in your phone to make sure its locking on to the towers. Also as OEMS learn more about the network they are building better radios and more efficient processors to lessen the time it takes to switch."