Anyone who knows two bits about Church history knows that some religious orders go through a process of becoming so full of sin and rot that all or most of the best talent then have no choice but to leave.
Here's what the Vatican Council has to say on this ever present phenomenon:
"If after consulting the appropriate Ordinaries, the Holy See decides that certain communities or monasteries no longer offer any reasonable hope of flourishing, these should be forbidden thereafter to accept novices. If it can be done, they should be absorbed by a more vigorous community or monastery which approximates their own purpose and spirit."
-Vatican Council II: Decree on the Appropriate Renewal of the Religious Life, number twenty-one.