It's odd you should post this. I flew my first 152 sortie this tour tonight. I was at 30k and hit auto-level. It flung me into a wild flat spin that I've never seen before. The nose would not go down no matter what. It just rotated around the horizon and bounced up and down. Finally, at 8k I managed to get the gear out and it finally forced the nose down enough that I could recover. It was a very funky flat spin.