Watching LaFleur's press conference, they asked him about the thought process behind letting Crosby try the 58 yarder. He mentioned that Mennenga was getting ready to send the punt unit out, and LaFleur halted it, looked at Crosby and said "can you hit this?" and Crosby simply said "yes". So LaFleur overruled essentially and sent out the FG unit.
Obviously if Crosby misses the kick there's some criticism that comes into play, but I think this example speaks to how much of a player's coach LaFleur is. He's really asserting himself and his confidence as the head guy for this team I think continues to blossom every day.