One must consider the internal baffles in the sump and the ability...or not to thoroughly suck up most of the oil. To be clear...the plug threads are stripped or the head socket. If it is the head socket, one can nudge the edge with a pneumatic chisel. It will definitely come off.
The likely cause for overtightening was no new sealing washer used or pure stupidity....sometimes both. The torque required to seal the plug is not great at all.
The likely cause for overtightening was no new sealing washer used or pure stupidity....sometimes both. The torque required to seal the plug is not great at all.