The source close to Danny's camp added the McFly guitarist is in crisis talks with his wife, Georgia Horsley, in a bid to save their relationship.
Two videos have emerged of Danny and Maura together on the night and there are fears more footage could exist.
The source said: “With this second video, Danny needs to now speak out...
“His career should be halted. He should be big enough to speak out to everyone and explain what happened.
“Who knows if another video will emerge, but being honest is the only way this has a chance of resolving itself.”
The source added: “Maura is getting a lot of the backlash, and Danny seems to be getting away with his actions.”
Amid the fallout from the footage, Love Island star Maura, who split from Strictly contestant Pete Wicks, 36, last month, said at the weekend she was flying to Los Angeles.
The first video that emerged showed Danny, 38, and Maura, 34, sharing a brief boozy kiss on the lips at a BRIT Awards afterparty at around 3am eight days ago.
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