If full-time accountants can make saves in the NHL, why can't defensemen?

Just one day after
emergency backup goalie Scott Foster
became the talk of the League filling in for the Chicago Blackhawks, Colorado Avalanche defenseman Tyson Barrie made an impressive save in a game against the Blackhawks.
Barrie acted quickly when a puck slipped behind goalie Semyon Varlamov as the Blackhawks rushed. He shomehow got his stick on a bouncing puck before it crossed the goal line, then sweeping it away to safety.
It was a nice play, sure, but can he also do your taxes?