Yohe penned an interesting interview with JR in The Athletic. He loved Fleury, tried really hard to get him back, was willing to pay a lot for him. Also comes out strongly that he would never trade one of the big three. Poof goes my theory he wanted to move Letang. Doesn't get to the specifics of why he resigned, but it seems logical to infer he wanted to fire Sully but couldn't. Also possible his feelings were hurt the Pens had yet to talk extension as he was on the last year of his contract and annoyed by a "wait and see" team posture.