Before taking the hammer to her, pull the battery, reinsert, and charge the battery for two hours.
At that point, try holding the X and power till the phone lights up, then take your finger off the power button but keep holding the X. If it takes more than 30 seconds and the phone still wont' boot into recovery, pull the battery and take it out back and shoot it.
Well, don't do that. If there's insurance on it, attempt to flash the 2.2 SBF onto it one last time and then take it to the VZW store with a "look what the OTA did to my phone!" story. If not, don't break it. Yeah, it might be dead, but it might not.