TMZ broke the story ... the Florida Dept. of Children and Families took the kids last week and placed them in foster care after the Dept. obtained a video showing Michael and Kate in a blowout fight in front of 2-year-old Landon and 10-month-old Logan. Michael's mother was given temporary guardianship.
Michael and Kate showed up in court today but a judge was unmoved by their pleas to regain custody. Michael's mom will care for the kids and Michael and Kate can only see their children with a DCF monitor.
The judge also ordered both Michael and Kate to take anger management courses.