The good news for Cody Green is that the coaches liked enough of him from a practice standpoint that he didn't get redshirted. I know there were depth issues, but they still had confidence in him being the #2 guy as a freshman. Last years experience was a big positive for him...he just needs a little more time is all to get the right amount of experience and confidence. That will translate into better leadership as well.
He didn't get redshirted because all that stood behind him was Washington and Kellogg Jr. Martinez was mostly playing slot receiver on the scout team, didn't get any solid QB reps until this Spring.
Green didnt redshirt because Spano tore his knee up twice. I find it rather odd that a player tears his knee up in the spring and was "ready" to go by the time fall camp came around. Then rips it apart again, same knee. Its pretty obvious that he was rushed back, we all know the reasons. Ideally the coaches would have love to redshirt green, he wouldve benefit greatly. Im not saying this as fact just as a opinion tying the two circumstances together, bash me if you will.
I think Martinez played the scout team QB last year. I remember reading that he was mirroring Taylor during the week of VTech.