So I've ordered a Thunderbolt and I'm waiting to get it. I'm interested in a custom ROM to remove bloatware and improve battery life. But here's the twist: I run GoodForEnterprise to get my work email and it deregisters me if it's running on a rooted device. So (a) is there some way to unroot any/all of the custom ROMs out there, and (b) if so, how and what ROM would be best for this project?