I could seek help to get him to quit talking to me during practice. Apparently talking on the mat is breaking the rules to the degree that senior students, etc will get involved. She did warn me though, that if I bring this up I will have to confess to talking on the mat myself (when I was telling him "no") and might be in some trouble also.
I knew something was really troubling me about this whole thing and this really nails is for me. I've visited, and some yrs ago very briefly trained at, a dojo with a pretty strict no talking during practice rule. But I never felt like I was gonna be disciplined or in trouble, sheesh....
Its weird enough that the rule is invoked so that the person being spoken to is guilty for any response (talk about blaming the victim!) but I have to say that the very notion of a grown up getting "in trouble" smacks to me of a very unhealthy dojo environment. Clearly YMMV and you are choosing to train there, but this is just plain strange to me.