The fact Mullen basically had no choice but to play Trask, and had the other QBs ahead of him, is another reason why Mullen is no longer in Gainesville.
Mullen was a solid OC. That's it. He was not a head coach. He wasn't even a particularly good judge of QBs. Remember him having Brantley ahead of Cam Newton at UF? Remember him pushing Matt Corral out and taking Emory Jones instead? Remember him trying to get Trask to transfer when he got to UF? Remember him sticking with Flippy ahead of Trask until Flippy breaking his ankle FORCED Mullen to play Trask? I remember all of that.