He added: "All they had to do is say they were scared to fight. We wasted a lot of time".
Hearn said it appears that a bout with Povetkin will be next for WBO, IBF, IBO and WBA strap-holder Joshua and Wilder - the WBC champion - let his feelings be known over that latest twist.
"I immediately thought what a load of bulls-". Except, the contract doesn't have when the fight will be or where it will be.
Hearn has already given us some memorable AJ fights in Dillian Whyte and Wladimir Klitschko, and he could well one day reward us with the unification bout we all want to see against Wilder. Nothing makes sense here at all. Shelly says, 'They made a bulls- offer and we chose to accept.
"Apparently you only had two minor comments that you couldn't even send us, so send them now, or sign the contract and we will sign the contract before your ink is dry".
"Then they said, 'what do we do now?' Let's send them a contract". With the WBA's position, the game is up for Deontay Wilder and we have to move forward with (Alexander) Povetkin.
"Who on earth waits almost two weeks to get back regarding a fight they supposedly want so badly?" But he suggested "we need action, not talk" from both sides of the proposed fight, which, as CBS Sports' Brian Campbell noted, "would be the biggest fight the sport could make and the most anticipated the division has seen in over 15 years". Sadly, Wilder didn't get to fight Povetkin, because after having fought as a pro for ten years, he would have represented Wilder's best opponent to date.