I think the Jays buried themselves with the slow start, and can't possibly play to this level for a long period of time, but they have a lot of talent. Their offense is above-average is about to get a huge upgrade at SS when Reyes gets back. They are 5th in MLB in bullpen ERA. The starting rotation has been their achilles heel all year, but they are showing signs of improvement, and Dickey, Johnson, Buehrle have good track records.
However, even if they played .580 ball the rest of the way, they'd still wind up with only 87 wins. That might get them a wild card, but I think they are too far behind Boston to come back.