Sources with direct knowledge tell TMZ ... Gloria's kids were at their school Friday, about to get out for the day, and ex-husband Matt Barnes was scheduled to pick them up. We're told according to their child custody agreement, Matt had custody for the long, Labor Day weekend.
Our sources say at 2:55 PM -- 5 minutes before school let out -- Gloria arrived to get the twin boys. She got the children in her car and that's when Matt showed up and told her it was his weekend for the kids.
We're told Matt told the kids to get out of Gloria's car and into his.