ron.dittmer wrote:
This might sound a little "Out There" but you might want to try this.
1) Find a parking lot with a solid concrete lamp-post base.
2) Place properly sized lumber between the concrete and the place on your low-point rear wall where it pulled away.
3) Very slowly have your spouse or friend back up the rig while you hold the lumber in the right place for the right pressure point. Some practicing on extremely slow backing would be a good idea.
Let the rig creep extremely slowly without using the gas pedal until you see the separation start to close. It might just go back into the right position once relaxed. Then caulk and I'd think you are good as new.
I don't like this idea. Too much chance for further damage. The proflex should be fine. I would see if I could flex it open at the bottom by hand just enough to shoot some sealer in there and then run a couple of washer head screws into the back side of the trim to pull it closed followed by a dab of the sealer on the screw heads. It also would probably be a good idea to trim off that pointed end on the trim so you don't get hung up on it in the future. Things sticking out like that can cut you good. I know from first hand experience.