over (general) managing

Managers like Bobby Cox and Tony la Russa bug the hell out of me with their over managing,like taking a pitcher out after a third of an inning for supposed matchup advantages.  Yeah, I know they're fairly successful, but I don't have to like it.

The Padres braintrust has really been taking the over-managing upstairs lately.  As discussed in another thread, sending Hensely down (and out of the rotation for at least 10 days, if I understand correctly) is dumb.  How is he not in the rotation now?  The other move is putting M Giles on the DL.  It was time to reinsert him in the starting lineup batting 8th.  He was getting some hits and we need his defense up the middle.  But, while they will wait a week with Morgan Ensberg apparently not ready to play, they DL Giles before even looking at an MRI; now he says he feels fine (see today's UT) and he's out for two weeks.  If they needed to bring up an infielder, why not put Ensberg on the shelf retroactive to his last appearance and get him back a week later?  

Great road trip, til yesterday, but the rotation is absolutely in shambles.  What's the answer?