I'm very cautiously optimistic about Mason this season, mostly because I picked him up cheap last summer in my league so I'm hoping he can pick it up a bit. I've read that he's taking this year a little more seriously and with a legit goalie sharing the crease in Columbus maybe Mason realizes it's time to pick his game up before he Jim Carrey's out of the NHL.
To actually answer your question, I think he might be a safe play tonight against Phoenix but I wouldn't go out of my way to grab him and start him. If he's on your roster, and you need a goalie start go for it but I wouldn't go streaming for him.
20 Team Dynasty (points per) - G (25, 50 for defense) A (25) PIM (3) PPP (15) SHP (25) OTG (15) GWG (25) HTr (50) SOW (75) HIT (1) BLK (2) W (50) SHO (100) OTL (10) GA (-15) SV (2) Use actual NHL salary
F: Giroux, Tavares, P. Kane, Okposo, Voracek, Nash, Hornqvist, Gaudreau, Kucherov, Thornton, Hartnell, Neal, M. Martin, Raffl, Eaves
D: Green, Ekman-Larsson, Jones, Gudas, Borowiecki, Ristolainen, Irwin
G: Luongo, Andersen, Darling
Farm: Rantanen, Hurley, Hartikainen, Stransky, Ferland, Labanc, Dzingel, Chase, Khaira, Tarasov, Petrov, Kosov, Kujawinski, Parayko, Hutton, Knodel, Thrower, Kichton, Marchenko, Williams