This situation has been discussed largely in the comments of this post:
The Marlies hired Dusty Imoo to be the goalie coach, and then some of his social media likes, which revealed the content he seeks out, were publicized. They included many unpleasant things including hate speech about several marginalized groups and COVID and vaccine disinformation as well as a great deal of political content.
Notable in today’s reversal, is that the statement comes from the man at the top of the organizational chart, Maple Leafs President Brendan Shanahan. The Marlies are a somewhat related and also partly separate entity owned by MLSE, but ultimately Shanahan is the boss of all.