They didn't "decide to let him go in free agency". They offered him a contract but he took less money to go to Philly because they had a starting position open and we didn't.
And there is not a single person here who would not have been pissed and called Allen an idiot if he cut our All-Pro starting MIKE this year, who is also the undisputed leader of the team, in order to start Baun at MIKE when he had not yet shown that he was even a good off ball LB.