I read Roy's comment (who is Walt's nephew, not his son as a previous poster asserted) and reading between the lines, I think Roy is looking for this situation to force Eisner and other board members out. Maybe he is looking to be somehow re-instated to the board himself?
Even if the hostile bid is successful, the Congress has already stated major concerns over this merger. The FCC chair said that this would be gone over with a fine-toothed comb. Senator McCain (R-AZ) also voiced serious concern over this merger.
In short, even if Comcast is successful, this isn't really going to happen.
I hope that Disney just gets rid of ABC. That alone should be a big help to the parent company.
Right now, Eisner might be an asset. I'd think he'd slit his own wrists before letting a hostile bid succeed.