I did meet him at The Star in that exclusive private country club lounge thing the one random time I was there (the marketing group and Vegas Raiders were hosting my brother and I got to tag along, get on the field, meet Jerry, Staubach in that underground crazy baller club thing under the stadium and was even in a Cowboys suite for that Saints game). It actually annoyed me to see Mickey there, lol. He's at least a nice guy with access. I think he means on the day to day in that tweet
I do recall a fairly well known clip and even Dak has spoken about it where I think the Cowboys were successful on same play/setup and Tony took him aside and said something like, hey they are know going to look for that, this D coordinator is going to do X, Y or Z so be prepared and here's how you can react...and it worked.
As others have said - he was working on his back, not in meeting rooms. That injury is no joke.