This thing is either really stuck or built like a tank... I've reached the end of my patience with it, and even trying to pull it apart with all of my strength yields nothing. I've put it on the table and put all of my weight on it opposite the side that was pushed in, still nothing. I've hit it on the table, trying to jam the opposite side in like the other in order to even it out, nothing! I've even stuck a screwdriver between the barrel and the outer body and tried to pry it back straight! Any other ideas short of throwing it out the window?
Edit: I just threw it on the floor and now it zooms the full range... Still cockeyed, so no focusing or stabilization still. One step forward! I can also zoom it so i can see the screws under the rubber ring, but I don't have a screwdriver small enough. Maybe I'll find someone with an eyeglass screwdriver tomorrow.. 
7D | Gripped XSi | Sigma 70-200 f/2.8 OS | Tamron 17-50 f/2.8 | 50mm f/1.8 II | 70-210mm f/3.5-4.5 USM | Speedlite 420ex