So speculates the New York Post, based on a few misquoted segments from the Howard Stern Show. Here's the quote from the Post:

"The joke could be on them if I get good and worked up [because] I got offered a major deal to go back to terrestrial and stay on satellite at the same time," Stern told his Sirius listeners.

Of course, the Post is (as usual) only leading to an inaccurate conclusion because Stern continues to say, "but I won't do it."

Mel Karmazin, as recently as last week, stated wholeheartedly that they intend to keep Stern exclusive on SIRIUS. And considering the investment they've made, that sounds pretty logical. This is simply the New York Post doing what they do best.  

[NY Post]
Thanks Glenn!