We don't know whether any mischief occurred during the draft. I doubt it because those things have a way of leaking out.
McD was not supposed to wipe his memory before leaving the Panthers. Any knowledge he gained while he was there is his. If he took any materials (draft notes, video, etc.) with him, however, I'm sure that violated his contract.
Stepping back from the draft for a week, I think McD was just going hard to get his guys. He wants high character, experienced guys with talent. OK fine. The draft has players with some from each category, but our board probably looked very different from other teams.
Before the draft some people on this board said our biggest holes were CB, WR, RT, LB, and S. Well, it looks like McD agreed. He moved up and down the board to get players he wanted to fill those spots. It seems like he plugged the first 3 holes with day 1 starters. I'm unsure at this point about the late round LBs. [s may be set with Hyde (ok) and Poyer (ew) or get some veterans thrown at it like Tre Boston.] You may not agree with who he selected or how he did it, but you can't deny that he went out to plug those biggest holes.
If I were to guess by his actions, I'd say McD feels this team isn't that far from competing for a playoff spot. The rebuild might not last that long. At least, I hope it doesn't.