Mid/rear Seats Assembly problems of the 2005 Chrysler Town & Country

I was driving my family to school in the morning in my Chrysler town and country, my son was sitting in the back right side seat in his high back booster. When I began to stop at a stop sign his seat released from the clamps at the bottom and went backwards, making the chair go into the back trunk space of the van. . We have stow and go seating so the seats can move to be stowed. At the time of the accident his seat was properly latched, I had just cleaned the van and rechecked all the seats. I was able to relatch his seat but I will not be using that back seat in the future. It seems that when I was stopping his latch failed and was not able to hold the seat into place.