[5] On March 28, 2012, Hunwick was signed to an amateur try-out contract by the Columbus Blue Jackets after starting goaltender Steve Mason was injured during practice.

[7] Hunwick made his NHL debut, coming on to replace Mason for the final 2:33, in a 7–3 home victory over the New York Islanders, on April 7, 2012.

[8][9] In July 2012, Hunwick signed a try-out contract with EC Red Bull Salzburg of the Austrian Hockey League.

[10] Hunwick made his debut for the Red Bulls, replacing goalie Alex Auld in the third period of the second game of the European Trophy on August 19, 2012.

[15] Hunwick played only two games with the Grizzlies before he was released to return to Europe, signing for the remainder of the 2012–13 season with the Iserlohn Roosters of the German DEL.