I had a 2v1 with a Spit 9 and Pony yesterday, they dived in for a pick whilst I was engaged. I killed the pony, damaged the Spit but had lost cannons on one side and was dry if ammo. I wasn't going to be able to escape so I saddled up the Spit and chased him till he clipped a wingtip and crashed.
He then sat there without ending sortie for10 mins whilst I flew away and landed. He was well inside the dar ring and would have got a ditch no matter. He just made sure I didn't get the kill. I presume he then bailed, got a ditch and upped again.