Here we go again!
Fellas, I know that you find it difficult to believe, but Spurs genuinely proposed to open the stadium on 15th September. There was no conspiracy. No intention to deceive the Premier League. There is no possible advantage that Spurs could have gained from the dishonesty that you claim. The delay has cost them hugely. If they had known what you claim they knew, they would have been far better off deciding to play at Wembley from the outset - not least because they could have completed the stadium at leisure from the outset and not spent millions on thousands of overtime hours. The conspiracy theory makes no sense at all. I fear that your dislike of Spurs is clouding your judgement.
Finally, Gordyola, I think you've misunderstood that roof article. It doesn't say that the roof was "never going to be ready" in time. Rather, it's an article which correctly makes the point that the cable net roof design meant that work on the roof couldn't be started until entire stadium structure was built - relevant in this instance because work on two fifths of the stadium site couldn't even begin until mid May 2017, after Spurs played their final game at the old stadium. As it was, and as the MACE representative claimed in the article, the roof was indeed substantially complete by the end of August.