Were these static wrist grabs where uke grabs your wrist stands still and then you try the technique or were they dynamic where uke pushes or pulls you.
They were static, which makes it much more difficult to pull off techniques. Had he been pushing/pulling I would have had much more to work with. We were testing an essential worse case scenario - large person grabs smaller person and refuses to let go. I also did zero Atemi, which would have made a difference.
Even so, with most people my size or smaller I can make them dance a jig even from a static grab/hold...no such luck with this guy. Fyi I am about 6'1" 220.