Baier thinks that allegation is fishy, and speculates there's more to the altercation people don't know ... suggesting it couldn't have just been a fight over fireworks, as some outlets have reported.
As we told you, Amber was in court last week to face the 3 felony charges against her and attend a hearing about custody of her son. Andrew filed for sole custody after her arrest, and a judge slapped Portwood with a temporary restraining order.
Interestingly, another ex and baby daddy of Amber's, Gary Shirley, was at the courthouse with his wife to show her support.
Baier tells us he thinks this is another sign something's amiss in the case.