The 53-year-old Strictly Come Dancing stalwart had been on the panel since the show first aired in 2004 and is known for his frank, direct, and sometimes cutting critiques.
Not holding back, he addressed the kiss between 32-year-old comedian Seann and Russian-born dancer Katya, 29, after pictures emerged last weekend.
“Personally, I think Katya was in the wrong,” he told the Daily Mail. “She should have put a stop to it because she’s a professional dancer.
“It’s her job not only to protect her own relationship but to protect the celebrity’s and be the mentor,” Craig said.
“I think she broke protocol over that. She should never have allowed it to happen.”
Express.co.uk has contacted the BBC and representatives for Seann and Katya asking for comment.
Seann and Katya were pictured locking lips in London last week, on the night of his girlfriend of five years’ birthday.
Both stars subsequently issued apologies on Twitter, with Seann calling the incident a “drunken mistake” as he wrote in view of his 112,000 followers: “In light of the story in today’s newspaper I would like to offer my sincere apologies for my actions.
“This is no excuse but it was a one-off drunken mistake which I am truly sorry for.”
His now ex-girlfriend Rebecca Humphries later released a scathing statement after splitting from the Strictly Come Dancing hopeful, telling her 30,000 Twitter followers she was “not a victim”.
“I was alone at home when Seann texted at 10pm saying the two of them were going for one innocent drink,” she said.
“We spoke and I told him, not for the first time, that his actions over the past three weeks had led me to believe something inappropriate was going on.”
Katya told her 56,000 Twitter followers: “I’m so sorry about any offence or hurt I may have caused with my actions. I wasn’t thinking and it was a one-off mistake after some drinks.
“I love my husband and we are very happy together, this is not a reflection on our relationship,” she added.
The dancer has been married to fellow Strictly pro Neil Jones, 35, since 2013.
The pair first met back in 2008 when Neil filled in for her regular partner at a dance competition in Blackpool.
Seann and Katya appeared on Strictly sister show It Takes Two earlier this week in their first interview since the kiss pictures emerged, with the professional once again addressing her marriage.
“I apologise to everyone it hurt and it involved, but the main thing for me is me and Neil are fine,” she said.
“I’m focusing on my job and doing it as professionally as I can.”
Strictly Come Dancing continues tonight at 6.40pm on BBC One.