I would think at some point during your travels the tire(s) some how came off the ground high enough for the link to flip. The equalizer (center part) moves either forward or backwards far enough causing the shackle to flip.
Try raising the wheels back off the ground on one side and use a lever or pry bar to flip the shackle back in position then lower it back down and do the other side.
2015 F250 6.7L Lariat Crew Cab
2017 Jayco Jay flight 28BHBE
Equalizer 14K Brand WDH (2.5" Shank)
2013 Jayco Jay Flight 26BH (Sold)
CMSgt USAF (Ret)
"GO BLUE". University of Michigan