Even if he was out had he slid, it might have been overturned for interference since the catcher didn't really give much of a lane. Just a couple brain cramps.
I don't know about the move to walk Judge there. That's putting a lot of baserunners in juicy positions with none out. One of them will eventually burn us imo.
The more pitching changes you make, the more likely you run into someone who doesn't have their good stuff (not to mention gassing the pen). I really hate the approach.