Prosecutor in OJ Simpson case accuses defense lawyer of tampering with evidence

Almost 17 years after the verdict in the OJ Simpson case, former prosecutor in the case Christopher Darden said he believed defense attorney Johnnie Cochran, who died in 2005, tampered with the evidence.  Specifically he said he thought Cochran damaged a glove which allowed him to later use the now famous phrase "if it does not fit, you must acquit."  The allegation has generated some national attention, including a debate in the Legal Ethics Forum, which has links to articles in Reuters, the Los Angeles Times and Slate.  The ABA Journal also has a short piece (with more links) on the story here.  The debate at the Legal Ethics Forum is about whether, and at what point, would the prosecutor have the duty to report another attorney's misconduct.  If he had enough information and did not report, then he (the prosecutor) engaged in misconduct.  If he does not have enough information, then is it improper to make the claim?  Go here to see the debate.