Glenn's on vacation (doing an on the road show.) All his staff are probably with him.
In the past, on his radio show, when he had a guest commentator fill in, he doesn't edit their show to reflect his views.
I imagine it's the same thing here. Whoever the guest filling in for him was, they were responsible for their own material.
I maybe wrong, but that's what I'm guessing.
This is CNN spining his show.
The CNN gig is going to cost him listeners.