By Daniel Bates On Tuesday, the NBA handed down a $40,000 fine to Blazers center Jusuf Nurkic for a postgame interaction with a fan. And now, according to Yahoo Sports’ Chris Haynes, we know what caused Nurkic to react how he did. Per Haynes, “The fan who Portland Trail Blazers center Jusuf Nurkic confronted in Indiana allegedly shouted ‘your mom is trash’ and said his ‘grandma’s a b**tch…’” Noting, “Nurkic’s grandma passed away of COVID-19 in 2020.” Nurkic tossed the fan’s phone in the confrontation, before getting in their face as security attempted to break it up a bit. Obviously, there’s n…