Ralphie May: Estranged Wife Broke Our Contract ... In Front of the Kids!

Ralphie May's estranged wife is poisoning their 2 children against him and refusing to let them see him ... according to new docs filed in his divorce -- which is getting VERY nasty.

Ralphie is upset because Lahna Turner is keeping the kids in Los Angeles ... while he's at the home in Tennessee -- but he says what really ticked him off is that she destroyed their Ketubah.

The Ketubah is the Jewish marriage contract, and Ralphie says she shattered the glass box that held theirs, then stabbed it repeatedly with scissors ... right in front of him and their children. In the docs, he also says she ripped photos off the wall and cursed at him.

Ralphie insists the family lives in Nashville and the divorce should be handled there. For her part, Lahna calls Nashville more of a vacation home where the family spent some holidays. She says home is L.A. ... where the kids are enrolled in school.

#RIPKetubah