By Andrew Holleran Scary details have emerged from the concussion situation with Dolphins quarterback Tua Tagovailoa. According to a report, Tagovailoa was unable to remember some of his decisions in the Christmas Day loss to the Green Bay Packers. “@JayGlazer adds that on Monday, when coach Mike McDaniel asked Tua why did he made some of the decisions he was making, Tua said he doesn’t remember. Which was very concerning,” Dov Kleiman tweeted. Tua is out for Sunday’s game against the Patriots. The NFL world is growing in concern for Tagovailoa, with many people hoping he will ultimately retir…