Removing faulty hasboard

Hello, I have an Aladdin L2 30THs miner but one of the three hashboards is faulty. The vendor (coinminingcentral) suggested I remove the faulty hashboard and send it to China to be repaired. I unscrewed and unclipped the cables but all hashboards seem to be jammed in their case. Check the video link

Is there something I can do to unjam the hasboard and slide it out? Thanks