In 1986, a large chunk of the tower fell onto the playing field prior to another Expos game
On September 8 of that year, support beams snapped and caused a 55-long-ton (62-short-ton; 56 t) concrete slab to fall onto an exterior walkway. No one was injured, but the Expos had to move their final 13 home games of that season to the opponents' cities. The Expos hinted that the 1992 season was at risk unless the stadium was certified safe. In early November, engineers found the stadium was structurally sound.
Wow.... I wonder if that story is true and that is why the stadium is crumbling?