The fact that the SmartTrack studies will be examining the effects of ST on all rapid transit lines, is a very strong indicator that John Tory does not support the subway extension.
Typically, Toronto/Metrolinx reports look at each transit project in isolation; ignoring the effects that one project might have on the other. This ST study is the first study in a long time to look at how the proposed project will affect other rapid transit initiatives.
John Tory isn't ignorant of the Scarborough Subway situation. He knows that, as proposed, the line is at the threshold of being unviable due to low ridership. He also knows that ST will without a doubt divert a signifiant amount of riders away from the subway. If John Tory supported the Scarborough Subway, the ST report would have looked at ST in isolation, not examining its effects on the subway or any other rapid transit lines. This ST report very much looks like an attempt to undermine the credibility of the subway extension.
It was pretty clear to me that his support of the Scarborough Subway during the election campaign (as well as his support for the Sheppard and Finch LRTs) was very much a "don't rock the boat" play on his part. It's pretty clear to most people who have even a decent understanding of transportation planning that SmartTrack along the Stouffville corridor is going to pretty significantly reduce the demand on any parallel corridors within a few KMs of it. John Tory knows that.
My bet right now is that Tory is working on something in the background to create a SmartTrack-centred plan for Scarborough. I think it will play out like this:
1) It will be clearly stated that SmartTrack along the Stouffville corridor makes the Scarborough Subway alignment as currently planned unworkable due to a lack of ridership to justify it.
2) This lack of ridership will justify a change in plans (moving it to Markham Road was mentioned), which will bring with it an increase in costs.
3) Tory will play the "we have a responsibility to the taxpayers" card regarding the cost increase.
4) Tory presents an "alternative solution" which involves a SmartTrack centred plan, which is really the plan he wanted all along, but couldn't present without during the campaign without appearing to anti-subway.
At least that's what I'm hoping will happen...