Wait a second, you're saying you won't be able to find any 115 mm abrasives in the whole of Canada?
First, dealers won't be out of stock anytime soon, because even if Festool recalls the RAS, they won't recall the abrasives.
Second, 115 mm abrasives are a common size for grinder abrasives, you should be able to find those anywhere.
Third, if all other options fail, you should be able to buy 125 or 150 mm abrasives and cut them to size.
No reason whatsoever to get rid of your RAS.