Why would a clothes change even be relevant to the lover? I think it is possible the limping guy, going through the neighborhood was the lover, taking the gun to Robinson, already setup at the building, they were dressed identically.
The whole thing stinks to high heaven and I would like to know who is manipulating the information. Is it the fbi? Utah police? I also contend that the picture in the stairwell does not match the guy arrested. Maybe it’s him but they do not look alike