He asked the other account a few months later to make him a fake ID. Why would you be contacting and want to be involved with somebody who extorted you to the tune of $150k just a few months back? Not to mention he would then have to give up his physical address to have the docs sent, to someone who just a few months previous threatened to release the physical addresses of users on the site?
There's no evidence of that. This theory just comes from the Bitcoin community's desire to make DPR into a martyr. Its not as if he was particularly sophisticated in covering his tracks in the first place (a lot of the things he did were facepalm worthy). Occam's razor -- he meant to take out a hit, and was just stupid.