Why not just produce a forgery. They have had plenty of time to do the best that money can buy. Get some friendly document experts to examine it and pronounce it genuine. Then, all his accusers have egg on their faces, and he looks like the bemused adult, gazing at the pitiful.
Much harder to do if the document is delivered directly from the State of Hawaii, either by order of a court or by having the Messiah authorize delivery to a court. Having it go through BHO would be only one step removed from the fake COLB posted on a website.