To be fair, the location on Carlaw did make more sense in terms of proximity to density and TOD, but yes it did increase complexity and cost unreasonably.
A similar thing happened when, to appease a relatively affluent NIMBYhood, Ottawa moved part of Phase 2 into a tunnel below the water line in a hundred-metre-wide riverine right of way consisting of soggy gravel. The then-mayor, in his idiom, proclaimed it would not increase costs and everyone pretended to believe this until the bids came in. They're still trying to build it, years behind schedule, having turned the whole area into something resembling the moon. But I digress.