why? what difference does it make to them?
There are Clubs where the Owner/Chairman has a say in the team, they dictate tactics in some cases.
what difference would it make if Sam had a chat with Mourinho the week before the Derby to see to confirm his own suspicions or ask him what they specifically targeted? At the end of the day the Manager makes the decision and he can ignore the advice if he wants.
If we'd have lost against West Ham then nobody would have batted an eyelid as he'd lost most of his games before that and Sam was taking over the next day. The fact we suddenly played in a different way and put a shift in for the first time in months shows some external effect acted on the Team. Sam having talked to the Team, and Unsworth before the match, and sitting in the Crowd with the players knowing he was going to be in charge of their future at the Club is an obvious external effect.
As I say, all involved will have played down Sams involvement due to respect for Unsworth taking his last game, but it is obvious to see.