Bukfan, I believe the work is already in motion to fully exonerate them:
Prosecutor Scott Ellington has recently said the Arkansas state crime laboratory will run tests on the DNA evidence once the defense's laboratory has completed theirs. This will include running the results through the FBI's
Combined DNA Index System database and cross-checks with DNA from police on the crime scene and from lab employees. Ellington said that although he still considered the men guilty, the three would likely be acquitted if a new trial were held "given the prominent lawyers now representing them, the fact that evidence has decayed or disappeared over time and the death or change of heart of several witnesses." He said that if the DNA points to another suspect, he will fully exonerate them and pursue the other suspect
.
But, I fully agree, it was a bullshit deal.
In fact, Jason Baldwin initially wanted to refuse the deal and go to trial and fight. The only reason why he didn't was because he wanted to get Damien out of death row immediately. In the press release, when Damien personally thanks Jason, I get choked up.