They've already been caught double spending in 2013. Google Ghash.io and Betcoin Dice and you'll see a ton of results.
I also get tons of results when I google "homeopathy works" but that doesn't mean it actually works.
You don't believe their statement that they traced the culprit down to someone in the old development team? See https://bitcointalk.org/index.php?topic=327767.msg3590902#msg3590902