If you're having trouble activating your Droid X after an SBF flash and Factory Reset just give it time. It's on Verizon's end not your phone being bricked.
Also if you're stuck at the Activate screen here's what you do. Tap the screen in the four corners like this:
(1)......................(2)
............................
............................
.............
............
............................
............................
(4)......................(3)
Emergency.....Activate
(________)....(______)
Tap the corners in that order and it will allow you to bypass the activation menu and use Wifi until Verizon is back online and you can simply open your phone Dialer and type in *228 and press option 1. It will go through, trust me. No phone calls to CS necessary. Just give it time.