I'm gonna post my thoughts and then read through, so apologies if it's similar to everyone else.
The silver lining I see is the coaches were forced to play some guys. Hixson was not the only guy struggling by any means, but they actually went and tried somebody else. Chase and Woodyard played quite a bit, and if Vedral had time probably would've had more of an impact.
I've defended the line at least as pass protectors this year, but that was atrocious. There absolutely were open receivers, and Vedral didn't have time to get it to them. There were a few throws he could have anticipated and gotten out earlier, but I can't put that on him because the pressure was still getting there too fast.
I dunno what the d-line issue is. I think a lot of times technically the issue was LBs not filling, but it's hard to fill a 15 yard wide gap. One thing I will credit Frost for, he could've tried to claim we still need more S&C since it's only year 2 (which probably would've been BS, but would've quieted some.) He didn't, he pointed out we absolutely shouldn't be getting pushed around like we did. Fixing it is another problem though.
The offensive coaches needed to figure out a way to kick this in gear. The defense played poorly, but the offense was worse. My initial thought was teams are covering deep and making us go the length of the field because they know we can't without shooting ourselves in the foot. But it's not even that, Minnesota rarely had a deep safety. They know our only big play guys are in the backfield, so they can load the box and get the best of both worlds, stuff the run and not worry about getting beat deep.