If theres any truth in all this, it makes total sense, Spurs have seen costs spiral out of control and are looking at a bill close to 850m.
The smart move would be to hang fire a little and have a clearer vision, but sadly outside forces, such as a toxic fanbase mean it will probably be rushed and corners cut, which is a shame, but it is what it is.
As it is 500m was always on the short side for a Stadium in the location it is and if they had any sense they would probably just move to Stonecross and build a bigger stadium for 250m in the middle of wasteland!