Fed said it himself - he needs the rest that he's getting now to gear up for the spring and summer. I think he's been burned out since the US Open and not to say that he was just going through the motions, but it seemed like the inner fire wasn't there as it was in the first half of 2012. The only time I saw that fire was at the AO against Tsonga and Murray where he scratched and clawed all the way to the end.
Fed can still play amazing tennis, and I fully expect him to come back in a better form than we have seen the last 6 months.
I posted this in the IW thread, but he is paying the price for his packed schedule last year with OG and DC(
) . I really hope this break does him good, but it's such a big ? these days. Remember when he came back in Rome 2010 and lost to Gulbis first round?