If you cant get past the lock screen at all no matter how many times you battery pull, then you need to pull the battery again. hold down the volume down + power button at same time until phone turns on.. this is HBOOT, scroll down to reboot recovery. that will put you into CWM, from there your only option is to restore your most recent nandroid. then try another ROM
I had the same problems with this ROM... even when i 'gently' overclocked i would still get freeze ups and lag.
I am about to go to bed but i will have my phone next to me with tapatalk. just took me some ambien so I don't know how much longer I will be awake.. but if you can get your most recent nandroid of something other that gingeritis to work, you will be fine. Can I suggest maybe liquid thunder bread or the newest CM7 1.4. they are both AOSP ROMs and extremely fast and great on battery... IMO 3D is overrated and a SUPER BATTERY DESTrOYER