For what it worth, more than one source has reported in the last two months that Vince McMahon has seemed a lot more tired than usual. Lots of people are wondering how Vince age is affecting the product and how much longer he will continue to work the schedule that he does.
On a related note, it said that Vince focus is 100% on RAW right now. One source noted that SmackDown always comes off better on TV because head writer Ed Koskey is pretty much left to do his job without having to do so many re-writes. RAW has more re-writes every week and has Vince putting in a lot more input than on SmackDown.