What I found interesting was Shipley's description of what he called "the fun bunch" -- a collection of young players who didn't appear to be taking the job seriously. He named, specifically, Trevor Plouffe, Danny Valencia and Drew Butera, and said that the team took steps to split them up in the clubhouse (I assume by shifting lockers.)
Chris Parmelee was emphatically not part of the fun bunch. He saw September as a chance to make an impression, and he took advantage. As a serious fan watching the games, I was impressed by the consistent quality of Parmelee's at-bats; Shipley was impressed by his demeanor.
There was an incident, fairly early in the season, in which it was reported that a "veteran" had loudly and profanely told off "a young player" who was pleased with himself during a losing streak. While it was never specified who was who, my assumption was/is that the veteran was Justin Morneau or Michael Cuddyer and the youngster was Valencia or Plouffe.
Whoever was involved, Shipley's description of September suggests the lesson didn't take.
I'm unsure how much weight to put on this. None of the three players Shipley named had a good season, but is that the result of a "who cares" approach, or is the attitude an attempt to cope with failure and maintain the emotional "even keel" that Tom Kelly talked about so much? I don't know.
But if (a) a player isn't doing the job as well as expected and (b) the people in charge perceive him as being flippant about it, then (c) that doesn't bode well for the player's future.