Today I boiled some water and let Deadpool (and Extremis 2.0) get a little hot water bath. I articulated their ab crunches that felt a little springy and hindered to the max the sculpt would allow and then let them cool while they were in that position. That seemed to fix the issue with the joint. If you do go to try this with Extremis 2.0, make sure you're careful of the paint on the Unibeam. It can scrape off VERY easily. I'd recommend clear coating it first.
Deadpool becomes a MUCH better figure once you get these joints working properly.
