1. Donate (You will not lose your items when you die)
2. OR: Manage to remove all traits and add feedlava (which I think it is called) and you won't die in lava.
3. OR: Pay someone to remove the lava where you logged off.
4. OR: Accept fate and cry in a corner.

I'm sorry. We cannot use staff commands to save you from imminent death. That would be staff abuse.