You're thinking about it too much.

The Yankees deserve blame for continuing to play a bad ballplayer; for throwing good money after bad; for organizational delusions.

But I see no reason to think that a trip to the minor leagues would have made Volpe "much better."

I see no reason to think that a disciplinarian manager would have somehow given Volpe the ability to throw the ball to the first baseman. 

I see no reason to think that Volpe's psychological reactions to managerial scrutiny are a bigger problem than his basic physical inability to play major league baseball.

Also, it doesn't matter where you place the blame. No one is solely blaming Volpe. Every fan who's angry at Volpe is also angry at the Yankees for acting as if nothing is wrong.

Same goes for Wells, by the way.

These young players at shorstop and catcher are disastrously bad.

So much for committing to the young players.