Ridiculous. The competition is said to be suspended - where exactly is the serious competition if you come with fake bids? The doubts about such a last-minute offer are entirely justified - either they're paying extra, then it's not a legitimate bid, but price dumping. Or they're making money from it - why was the other bid so much higher then? If you can suddenly save 7 million in a bid without it causing major pain, then something is definitely wrong, one way or another.
At heise online news there's the original article.