Ok I'll give my clarification again:
"Fully rooted" is a meaningless term. You have superuser access on your phone, that means you have root.
An additional level of protection that HTC has added to their phones is a NAND-flash chip which is locked by a memory protection unit. This is below the OS level, and thus below superuser. You can still have full root access to your phone, and not have access to this chip. The reflash tool unlocks NAND and reflashes the recovery partition.
The only way to unlock this at the hardware level is an exploit, or by changing hboot such that it does not initiate the NAND protection. We are still hesitant to flash hboot. If you mess up reflashing recovery, you have an unlimited number of chances to get it right. If you mess up reflashing hboot, you have a permanent brick.
Thus, since the recovery partition is protected by this hardware-level memory protection unit, ROM manager cannot reflash the recovery partition. You people seem to say that this is "not fully rooted" so "it is not sticking". Whatever. Yes, it won't "stick". No, this doesn't actually matter. You get *precisely* the same effect by updating in ROM manager. If there is a critical update that requires flashing, we will make sure that our users obtain this update.
Ryan
unrevoked team