I've spent the better part of the morning talking to folks about this. The internet FUD machine is at it again.
There is no rootkit in the G2
It's simply a different partition scheme, that incorporates a failsafe in case the system goes bad. This way, your G2 can't be bricked. And now that the BBQ is over, the big guns are at it.
This will fall. It's not malicious, it's just new. If it turns out not to be crackable, I'll take my G2 back. It may be the best Android phone to date, but like the Droid X, I don't want locked hardware, even if it's not locked on purpose.
Keep an eye on the front page, there's a twist to this story that none of the blogs spreading the FUD caught. You'll love it.