Yes and no. We apparently weren't as bad as it seemed - though really it was only a couple units that seemed poor. But that's part of the point - some of the units are more affected by scheme than others.
And it's not like he had a lot of work to do. By the same ratings, we were #8 in the country the year before. So we got noticeably worse to be #28. Not that he had total control over that either:
Field Goal Efficiency - Improved from #91 to #20 - I give Reed some credit as it does sound like he worked on some mechanical issues. But it was also going from a true Freshman kicker to a sophomore.
Punt Return Efficiency - Went from #1 to #50 - Losing DPE didn't help but we simply didn't have many opportunities to return punts, even if DPE was back there. Some of that is our opponents scheme but it didn't seem like we were giving Westy (and whoever else)much of a chance.
Kick Return Efficiency - Went from #20 to #86 - Probably the one most directly affected by scheme and we got a lot worse.
Punt Efficiency - Improved from #66 to #29 - Probably the least affected by scheme and mostly to do with how well your punter is doing - we had the best punter in the conference.
Kick Efficiency - Improved from #99 to #78 - Small improvement, probably split about evenly between scheme and skill of the kicker
So in what I would argue is the areas most affected by scheme we got a lot worse and in the area least affected by scheme we got a lot better. I don't think that's a ringing endorsement. He may have done some work to improve Brown and, to a lesser extent, Foltz but that's harder to know for sure.