These statements are incompatible. If he wins a slam this year he could be hovering around 10000 ranking points. That would likely be within striking distance of #1, depending on what Nadal and Djokovic do.
I think Federer's focus on the Olympics in London makes it a bit less likely though.
The problem is that even if Federer wins a slam or two, the most probable is that Novak and rafa will at least make semis or final, so the difference in points won't be that big. Only chance for Federer is if Nole is injured for most part of the reason which I highly doubt.
If anything Novak will be even more fired up to defend his ranking and slams. He said so in a recent interview with her childhood coach, Jelena Gencic.
Jelena said that when she saw the way he got the Wimbledon trophy that he would not gave up on that trophy easy. And Novak said..."we worked so hard to get here, I'm not giving up soon". Good sign.