It's November. To hold kids this long then drop them is not going to be well received by some coaches/players.
I get it, players do it to the coaches all the time and nobody cares.....it's a business decision, it's kid, it's a bad product, whatever. But you know as well as i that it's a double standard out there.
I never really watched any tape of Riggins. The only thing i saw was his testing numbers on ESPN.....one of the worst shuttles at his position this year. Unless that number is old, he was hurt or something i can see why they are looking elsewhere. It could also be due to how well the freshmen DTs are progressing.