Conversation so far:
How did Larry Brown's (basketball) career begin at SMU?
On April 17, 2012, ESPN reported that Larry Brown was to be named the new head coach of the SMU Mustangs.
When did Larry Brown (basketball) officially take over as head coach of the SMU Mustangs?
How was the 2014-2015 season for the SMU Mustangs with Larry Brown (basketball)?
Did the SMU Mustangs go far in the 2014-2015 season?
In September 2015, Larry Brown was suspended by the NCAA for 30% of the Mustangs' games in the 2015–2016 season. The team was banned from 2016 post-season play.

Question: Why was he suspended and the team banned?
Self-contained rewrite: Why was Larry Brown (basketball) suspended and the SMU Mustangs banned?