The company cited a desire to avoid controversy, and a conservative advocacy organization, One Million Moms, had already started a petition urging the cable outlet to remove the ad from its schedule.
Hallmark subsequently folded under the pressure from homophobes and pulled the ads on December 14, prompting Ellen DeGeneres to write on Twitter, tagging Abbott: "Isn't it nearly 2020?"
Mike Perry, president and CEO of Hallmark Cards Inc. - which owns Crown Media - thanked Abbott "for his many years of success and contributions to Crown Media" and wished him "continued success".More news: "Obi-Wan Kenobi" Series For Disney+ Is Put On Hold
The head of Hallmark's media business is leaving the company after 11 years, just a month after its flagship Hallmark Channel faced an outcry over a decision to pull an ad with a lesbian couple kissing.
In early December, Abbot seemed to signal his openness to Hallmark featuring same-sex relationships and themes.
"We're open to really any type of movie of any type of relationship", Abbott responded.
The advert for wedding-planning website Zola showed two women getting married.More news: Wolves clash is the last true Premier League test for Liverpool
The flagship Hallmark Channel drew 1.7m primetime viewers between 16-22 December according to Nielsen Research.
So Hallmark reversed course and reinstated the ad for the wedding services site. The pro-family group said that Abbott had said that "the advertisement aired in error, but he was informed about it after hearing from concerned 1MM supporters".
"The Crown Media team has been agonizing over this decision as we've seen the hurt it has unintentionally caused", Perry said in a statement provided to CNN Business last month.
"Said simply, they believe this was the wrong decision".More news: Ash Barty shakes early nerves to cruise into last 16
Hallmark Channel did get some negative press over the holidays, however.