If you're buying half a season's worth of home games, I'm assuming both parties will be in or near Toronto. So spend an hour at Starbucks and do the transaction in person. No need to accuse the guy if there's a very easy way to avoid being scammed.
Wieters had a down year. Taking a one year 15m paycheque to rebuild some value and cash in isn't a bad idea. He said he had multi year offers but obviously they weren't good ones. He puts up a huge year and suddenly maybe a desperate team offers him McCann/Martin money. Totally understandable decision for him and his family.