Is a"Body Lock" in Judo legal ?
I was role the other day in class and I got the back of my opponent. I then proceeded to get the body lock when he turned over. While I was doing this my oponent complained that "you cant do that" along with some other random whining, so while I was still holding it I asked the instructor if it was legal at a competition. He stated that you cant do any spine locks or anything of that sorts, and I countered with it was for strangulation and control and i was not arching or trying to arch his back. He then blew it off and didnt really hav any answer so I think the guy I was rollign with was kinda being a whiner, and I didnt want bad blood so I let it go.
Question ... is this a legal Judo move? If not what can I change of the move to make it legal as I like to use it for control in the back mounT.