I've been watching Fox a couple of hours and I haven't heard that at all.
What he did is repeat his call for all 527's groups to stop running smear ads
The same position he's had all along.
Bush is taking the high road. He realizes that they won't stop, but by asking them to, it shows he isn't in "cahoots" with them as Kerry suggests.
So, the truth in the Swift Boat ads will continue to benefit Dubya. But those turned off by it but still seeing the info will see that Bush himself didn't make or approve the ads.