Amid a wicked Super Bowl hangover and heading towards what is likely a losing season, it’s natural that head coach Kyle Shanahan’s position as the man in charge of the program is challenged. He’s not doing a good job this season.

The 49ers are struggling at 5-6. They have a tough game in Buffalo on Sunday night. A loss would further complicate their path to the postseason. So how is the current vibe in the locker room?

The San Francisco 49ers are on the wrong end of .500, and one NFL exec thinks Kyle Shanahan is due a large portion of the blame.