"I notified John that we would not be extending his contract beyond the 2017 season, and after consideration, we felt it was in his best interests and the best interests of the team to part ways now," Chiefs Chairman and CEO Clark Hunt said in a statement. "This decision, while a difficult one, allows John to pursue other opportunities as we continue our preparations for the upcoming season and the seasons to come."

Quote tells you everything you need to know. Back at the time there was a lot of surprise that Dorsey was going into his final contract year and no extension had been done. Dorsey wanted his extension, Clark ultimately said no. Dorsey said I'm out and Clark said okay.

Every indication was Dorsey was going to be allowed to finish his contract & might have been able to salvage his job if he fixed his ways (completely my speculation).

It was NOT a good time to change GMs with contracts to be done and more recruiting still going on. It took a couple weeks to get it ironed out because they had to change gears. Does Rooney Rule apply on GM?

I think Clark had his eye on Veach when Dorsey forced his hand.

Pretty much. Dorsey has a good eye for player talent but sucks at the financial/management/relationships part of being a GM. He needs to be a scout