Mikemac

That's funny Adam!

I should have myself a bit clearer on this. I meant to say that the pain from rolling incorrectly comes from the pinching of the skin against the pelvic bone, and the roll was begun slowly at first as a cautionary measure.

I'm not advocating cement Ukemi exactly. however, if you ever do have a real life encounter where you need to roll, you might want to consider what it would feel like without the security of a mat.