Whitlock was on PFT Live today and said that Haley had taken away play calls from Weis a lot during the season and that was one of the main reasons he left. He did say though that he is hesitant to believe anything that KC Radio reports because they throw stuff at the wall all the time, but said that that 4th and 1 call had "Haley written all over it"
He said that Haley is insecure and wants a puppet who he can scream at and blame things on when things don't go right.
Also said that the reason Jamaal Charles doesn't get many carries is because Pioli and Haley have problems with guys drafted by Carl Peterson and Herm Edwards.
Here is the link. It is in Part 2 of PFT live so just fast forward through the first segment and then click on the Whitlock interview at the end.
http://hqplayer.nbcsports.com/Player.html?PID=44