There are many bitcoin services and exchanges that have a feature to cancel a withdraw. Usually most withdraws are sent to a queue and then they are batched with other withdraws to keep the transaction fee small. Some places batch by number and some batch by some timeframe like every 60 minutes or so. So that is not sketchy.
I think there was a similar situation with a gambler on Safedice. He basically kept gambling, tried a withdraw, it failed, and instead of stopping, he kept gambling more and more and I think made more money, however unlike this individual I don't think he lost his earnings. So there is proof that some "gamblers" might keep gambling even though they know deep inside that they won't be able to withdraw their winnings.
I am completely with you, but I know what I did and I did not continued gambling and I especially did not gambled away 180,000 EUR. Every normal person would have stopped no later than losing 10 %, maybe 20 % of the 180k "ATH".
This is a false statement. You claim that you would have stopped playing but you started from 6 BTC, and you did not stop there.
you continue gambling to 12 BTC. But you did not stop there. You reached 19 BTC and again you did not stop there.
Please give us your written consent to post publicly our ACCESS LOGS, which includes your IP and other info about you and also prove that you never stopped gambling.