OK, that's cool .... kind of like when sometimes Howard guards Duncan .... i can see that.
I don't think that is a solution though, Dirk is more of a threat then Howard. Its a tough problem to solve because Duncan can't play Dirk. I don't see anything that the Spurs can do, right now, to keep their center on the court vs the Mavs without Dirk Killing them. Other then Duncan how many of the big men are known for their defense?
They will be forced to put Bowen on him ... or Duncan
The Spurs need to sign a SF to guard Howard. If they do that, they play their game and win. If they don't, the Mavs force the switch to small ball