I've had the tail derail twice on me.  Once was when I was coming in to land, going around 150-200 when I found myself flying backwards all of a sudden...  Found out the 152 doesn't like to land tail first right quick. 

The second time around, it actually saved my arse.  2 of us were attacking a set of 17's, and after I completed a flanking pass on them, I quickly came back around to try and peg him from a low 8 o'clock.  At that time, he was firing at the other plane so I figured I'd try and peg one of his drones (yes, I was being a little impatient 

).  As soon as I had my nose on his 17's, he stopped shooting at the other guy, started firing at me.  I quickly put full right rudder, hard right when the tail derailed on me.  Stopped me on a dime and I dropped straight down.  He went from 800 to 1.5k right quick and I lost 2-3k alt before I recovered (still not too sure how I pulled off the quick recover 

).