My company will not allow access to their VPN from a rooted device. So I rooted, removed the device manager to avoid future "upgrades to 2.3.6" and froze some of the bloat. Then I unrooted to ensure big brother did not kick me out.
Whenever ICS or a fix is provided to the battery problem, I can root again, activate the device manager and allow the upgrade. Basically, I decide when to upgrade and not AT&T.
If it weren't for my company's policy, I would have stayed rooted. (Fixing oops)