Ford has been very vocal about not being too fond of SW. I guess "pissed on" would be kind of a strong word. But any time he has been asked if he would play in another SW movie he doesn't hesitate to say no. He has also more than once mentioned that he wished they would have killed Han in Return of the Jedi, because he didn't want to be asked back to make a fourth film or the second trilogy. I believe once he even said he wished George would have killed the "son of a bitch" in reference to his character, but I don't remember clearly.