LXA when it closes a Chapter, normally waits for the Final Members to be gone ((4/5)) years.
But, unless the infractions are not that big, but many and depending on the Size and Name of the Campi does swing weight along with the Alum Group working with them.
While not being there and just reading what has been stated on site, It sounds like a raw deal. But not for me to decide. If the National promised certain things and renighed, shame on them.