The Timberwolves couldn’t take care of business at home in a Game 3 loss to the Spurs made even more sour by a heated confrontation between Minnesota coach Chris Finch and NBA referee Tony Brothers. In the fourth quarter of the Timberwolves’ 115-108 loss on Friday night, Brothers, one of the game’s senior officials, was seen engaging with Finch in an escalated argument. With Minnesota trailing by two, Finch allegedly tried to call a timeout but Brothers, who was standing nearby on the half-court line, failed to give it to him immediately, instead waiting about three seconds to do so. As a result, Finch went onto the court to chastise him. Brothers wasn’t happy about Finch’s emotional outburst and was then seen walking toward Finch as the two exchanged heated words. At one point, Bones Hyland and a Timberwolves assistant coach stepped in to keep Brothers away from Finch, and play resumed shortly after.…