Before breaking out the cutting torch
[u][b][size:14pt]watch this video[/size][/b][/u] , can happen with any wheel and tire, inflated or not.
Tire Pyrolysis The service manual explains how to disassemble the rim.
Being as you're not saving the rim you may find it's easier to use a saws all on the tire, only difficult part is the steel in the bead, a cold chisel works on them if you cant get the saw in there.
