How would you suggest scheming around an OL that can't open running lanes and can't pass block? I think that they've tried getting the ball out of Orton's hands quickly, but folks complain that they "never go deep". Unfortunately, the OL hasn't held up in pass protection long enough to go deep. I think that they've tried screens, but OL blocking for the WR/RB on those has been poor. They've tried running the ball inside and wide, both without a lot of effectiveness.
The poor pass protection means that opposing DBs can play tight to the line not needing to fear getting beat deep. This also further clogs running lanes for a team that can't create holes to begin with.
Offensive scheming requires at least *some* kind of strength to play to.
I really think that they knew that they needed OL help last offseason. Unfortunately, either Kuandjo and Richardson are not yet ready or they misfired on those picks. I give them credit that they knew what needed help, but the reinforcements didn't work out. After watching Cyril Richardson be abused during Senior Bowl practices, it isn't surprising that he wasn't a help this year. Kuandjo was a bigger let down. I know that I thought that he would help when they drafted him, but the preseason showed that he couldn't play at the NFL level - at least not yet.