Fortunatly into a field of oil seed rape which was a soft landing. DHorse was in a rah rah mood, and having just watched one of the tbs gallop up the hill, didn't listen to my admonishments that he wasn't going that fast and gave it a try with a snappy walk to canter transition that I hadn't asked for - which resulted in me exiting via the side door.
On the upside, I did prove to myself that I could actually mount from the ground