“....something happened and he was gone. I wonder what the problem was then?”
I know Rudy can be a loose cannon, and may not possess the subtlety required to carry out President Trump’s long term media strategies. They probably need to sideline him or even muzzle him fairly regularly, and keep him on a tight leash.
But I guarantee he’s a fiercely loyal and passionate defender of the President. When the time is right, Trump will let him off the leash.
It's the leashed he could do.