All the metallic tape you removed is sort of important. It might be a situation unsolvable. That metal tape you described provides different purposes depending on where it is and how it's connected to main board. Most likely you are grounding out the unit when you flex it which is why it freezes.
Maybe you could find a broken one for parts on ebay or craigslist (or a local dealer) and go from there to try to replace as much of the various parts that you had to remove. At least that way you'd see where everything was and be able to carefully remove and replace it on yours.
Sorry that's all I got on this. ..