I don't get his plans at all. He says he needs to play more on clay yet skips a masters that he could have gained points at? His scheduling this year has been questionable to say the least.
I don't see anything wrong with his scheduling this year so far, and the reason he wanted to skip MC was (a) that he felt it was too much for his body to cope with right now, coming as it has on top of the DC tie, and (b) so that he could do some of the more rigorous fitness training he was unable to do in Miami last year and so get himself back to full fitness, which seems reasonable enough to me, because until he does that he's going to continue losing matches, and if he keeps on losing matches he won't get his confidence back, so I don't think there wasn't much sense anyway in playing MC, where he had few points to defend, in the off-chance of maybe gaining a few more.
I did hope that he might play the Portugal Open though as a warm-up to Madrid because going into a Masters cold doesn't seem a good idea to me, but it's his choice and his career, so we have to respect that.