I'm not sure how people can be so certain that Schilling won't close. Is it unlikely? Sure. Impossible? I'm not convinced. Based on the interviews I heard today from Francona, he didn't sound like they knew for sure exactly what roll Schilling would take out of the bullpen.
I think the next couple weeks are going to be a big test period. It's very possible that Schilling finds his groove and resumes his roll in the front of the rotation. However, if the Red Sox don't acquire a closer before the deadline, and Schilling is thriving in the bullpen, I don't think it's a stretch for the Red Sox to try and use him as a closer, especially considering that they are in first place with the current rotation.
As of right now, I think the best we can do is keep an eye on the trade deadline, depending on what moves the Red Sox make (or don't) will be the tipoff for Schillings future.
I suppose you could say that everyone has an El Guapo. For some, shyness may be an El Guapo. For others, lack of education may be an El Guapo. But for us, El Guapo is a large ugly man who wants to kill us!