Gary Coleman blames his demeaning new movie role as a 'midget' porn-mogul for putting a strain on his marriage, and he's on the hunt for the agent who advised him to take the part.

The pint-sized actor's new film Midgets vs. Mascots is scheduled to premiere at New York's Tribeca Film Festival this month April (09).

Coleman stars as a miniature adult film mogul in the project but insists he only took the part to cope with mounting expenses during the worldwide credit crunch.

The actor and wife Shannon Price appeared on U.S. TV show Divorce Court last April (08) to air their differences with intent to save their marriage.

In a rant posted on video sharing website YouTube.com, Coleman blames the film for causing strain in their relationship. And he's issued a violent warning to the agent who helped him land the part.

Coleman says, "It was worse than any film school project. I shouldn't be in this movie in the first place, but the mortgage keeps coming. This movie almost cost me my relationship with my wife. It has caused me grief... I'm going to bash my fists right in my agent's face."

Coleman and Price married in August 2007 after a five-month courtship.