He never confessed it, never bragged about it. Rather, he has always denied being connected with it. That was most likely the root of the speculation about his involvement. When that speculation was repeated over and over again, it gave rise to a false rumor, and reinforced it. He explained, again, that he was not involved with the Patterson footage in any way, nor can he point to anyone else in that regard.
Chambers is intelligent and straightforward.
He is still lucid and talkative, and can still set the record straight on this matter. He has no reason whatsoever to continue to conceal involvement in something like the Patterson footage. It would only go to his credit to have created such a fantastic costume. Below you'll find quotes from the first interview with Chambers after the Chorvinsky article was printed. The claim for Chambers' authorship of the alleged costume was attributed to respected film director John Landis and was reportedly supported by numerous artists within the special effects industry.