from the wiki
"The evidentiary hearing was held in June 2010, during which affidavits from several prosecution witnesses from the trial changing or recanting their previous testimony were presented; some affiants asserted they had been coerced by police. The State presented witnesses, including the police investigators and original prosecutors, denying any coercion."
so these "recants" were from pressure and threats by the community.
this was brought to court and considered. but then the state had proven that there was no police coercion involved. thus, the recants were ignored.
see. the system DOES work. the recants had their chance, and proven bullstuff.