That would seem logical with Zimmer being brought in. I believe Quinn saw Urban, Golston and Watkins as 5-techs for his 5-2 run fronts. They had other positions on the line they could play, but I think that was their initial value with Quinn.
I think with Mazi that he saw a powerful athlete who had 3-tech athletic ability, so he wanted him to play 3-tech to Hankins 1-tech, especially on early downs. I'm assuming that he thought he could fix Mazi's late get-off. I understand why he did what he did, but coaches can be too quick to try to make a player something he hasn't been. Sometimes it works, but often their heads are swimming.