So far, the Pats haven't really let it go to their head like most dynasties, but it's just a matter of time. It almost always does. Even the beloved Bulls dynasty of the 90s got a little too big headed.
Once in a while, dynasties need to be knocked down a peg to keep them humble. Hopefully that is what happened as a result of the Yankees getting their asses handed to them by the Red Sox in that four-straight-game comeback in the ALCS.