Found a way to manually change a teams coach at any point in dynasty

[Extreme Gamecock Fan]

with the team you want to change coaches on, Create a new coach, and then instantly retire him. you can move any coaches you want using this method although after they wickedly made it so that you can't edit coaches alma mater or pipelines anymore it takes some playing around with to move the coaches you want on the teams that you want.

[Extreme Gamecock Fan]

For example: if you want to move the Ole Miss Head coach to South Carolina, Choose Ole miss, Head coach, and then Create a coach. then do the same for South Carolina. Now retire the South Carolina created head coach, and the Ole Miss coach will show up as SCs head coach.