Yeah, that's a hard one. I tried removing the Teensy from my first Phantom without much success.
But I now have a Hakko 808 desoldering gun. If you don't mind paying shipping both ways, I will remove the Teensy for you, free of charge.
Or, I have an extra PCB (only one side) that I bought from MD for $22, and I would sell it to you for what I paid. Always there as a backup plan if you want me to try removing the Teensy from yours first.