It's too bad if he's holding that against the Jazz. Karl has been very all over the place in retirement and I seriously doubt he would have held down some sort of permanent job offer from the Jazz when there's so much hunting and fishing to be done.
That and his family lives in Louisiana. He still has kids in HS and he has a son at LSU. He probably likes living where he lives close to his family. I also really doubt the coaching staff wants his help that much. Being a great player doesnt not equal being able to teach. The thing I remember most about Malone's last session with Favors/Gobert/Kanter is that he was baffled that players wear modern protective gear like compression sleeves and knee braces.