After taking someone's back today and digging my hooks in under his waist, I was unable to get his arms or neck free for a good submission. However, as we slid around I found myself with one foreleg under his stomach and the other outside. Being unable to come up with something better, I figure-4'ed my legs and squeezed, resulting in an immediate tap.
After getting up, my opponent (who is higher ranked than me by at least a year) told me that what I had done (a body squeeze) has been illegal for a long time. Why has Do-jime been outlawed? I thought "choking" the abdominal muscles would be much less dangerous than choking or strangling the neck, since it's a large muscle group instead of an artery or wind passage. This is also the submission (or something like it) that Kimura used to render Helio unconcious, so I'd think Judo would want to keep it in the repertoire of a typical student?
I also apparently "broke the plane of the back" earlier in the match by pulling on the arm while still pinning the back, but he said he was expecting it and wasn't hurt. I still felt like an asshole :o
So, thoughts on body chokes anyone?