There were cases of fighter pilots screaming down in a dive at high speed, releasing their bombs, pulling out of the dive and STALLING !!!
So even at high speed they stalled. It wasn't the lack of speed, it was the high AoA that got them
Easily done in a glider... Enter spin, use opposite rudder to stop the rotation and exit the spin in the normal a nose down position. The speed will build rapidly and all you have to do is pull a bit too hard while trying to recover to S&L.