I think the decision was made as soon as Underwood dropped that sure handed TD pass that might have won the game against Winnipeg at THF earlier in the season. That was the last time that he was activated for a game this season and never found his way back into the line-up and rotation after that.
I liked Underwood , he had his moments last year and did some good things here but unfortunately I think it was multiple things that did him in here.
#1.....the aforementioned dropped TD pass against Winnipeg
#2.....Toliver returning to the lineup from the injury list
#3....Inconsistency and reliability game in ,game out.
#4.....the signing of Streeter
#5.....his hair (just kidding on this one )
I'm sure that the way this league works that with injuries and all that Tiquan will resurface eventually and find employment elsewhere with one of the other 8 teams at some point this season.