When the pass rush goes from good to not good....this is what happens to a secondary.
I'm not saying we have the world's best pass rush, but there's this misconception that we have a bad pass rush because we don't have x number of sacks. Some teams do a good job of employing quick passing attacks which will completely negate our rush. I've made the point that even Justin Tuck wouldn't be able to get to the QB in time based on how fast the ball has come out of the QB's hands. Obviously not every team we've played this year has been that way, but UMass comes to mind. I would be concerned if our DL wasn't getting to the QB and the opposing QB had lots of time in the pocket. Have any teams we faced had a QB just sitting in the pocket for long periods with the rush not getting to him? Maybe on a play here and there, but I think consistently our guys are trying to get after it and they're putting pressure on. They're just not getting there because the ball is often already gone.
Based on the above observation it's not the DL's fault that the secondary has struggled at times. If opposing QBs had all day to throw I certainly wouldn't fault our secondary for eventually breaking down. Any group of WRs can get open given enough time. I'm talking about busted coverages, mental errors, poor angles, missed assignments, etc. Those things have nothing to do with our pass rush, those are mistakes that belong with the secondary. Redfield and KVR are upperclassmen that should be on top of things by now, but they've made some costly mistakes this year (And for Redfield it goes back to last season too).
What could we do differently? That's not really my forte, I'm more of a trenches guy. Maybe we need to employ more press coverage when the opponent is using quick passes. Disrupting the receivers routes would allow our DL the time to get to the QB. It seems like we play off from the receivers an awful lot, which is probably why they're using those quick passes. Maybe VanGordor needs to make that call, but I'm more concerned with stuff like Max biting on the fakes and KVR making boneheaded mistakes like the PI call. I'm not even sure why he needed the interference to break up the pass, it looked like he was stride for stride with the receiver. Maybe he got tripped up, but I couldn't tell. That certainly wasn't Russell's only mistake this year, he definitely isn't where he was going back to the end of 2013. Whether it's a missed step or trying to learn VanGordor's system, he's not where he should be yet.