I doubt that the tuner's "anti player attitude" had much to do with it.
More than likely, in the process of tuning he disturbed a dry rotted
piece of vacuum tubing or hose, resulting in enough lost vacuum to
disable the player. (This could easily happen with the air motor hose).
If so, simply replacing the supply hoses could get your player
operational again.

Or, it could have simply been your player's time to go and it was just
a coincidence that he had just tuned it.  Only an inspection will tell.

Good luck!

Fred Wilharm
Florida Antique Mall