Used a 2-part epoxy, thermal paste mix initially. But soemhow messed the ratios, I think.
Tried to peel it of with a screwdriver, nada
Boiled the head (C8 variant), nada
Tried to head the MCPCB with abutane torch, but the deep head would choke the flame.
Started to groudn of the board, but got fed up.
Finnaly I drilled from the driver side, enough to punch with anail the MCPCB out.