Yep, there was a news article which stated he was not at practice on Saturday morning. I'm not sure exactly when it was, but someone here posted a link for the article within the past few days.
I haven't found the news article confirming JM was not at practice on Saturday morning (which according to Covenant's website was from 9-10:30 a.m.), however, there is this blogpost I found while Googling (I am not familiar with this blog):
Matthew did not attend a scheduled Covenant team meeting on Saturday morning, sources say.
http://www.schillingshow.com/2014/09/23/breaking-news-poi-matthew-worked-as-covenant-football-coach/