this is the first time I´m reading about these alleged litecoin withdrawal problems 

Besides, I think their strategy isn´t to run off with the funds in the worst case scenario.
I rather expect them to handle it similar to the last flash crash where they simply freeze trading and
do a roll-back of trades.

This would also explain why they don´t respond to your concerns because obviously that would once
again show that lenders would get saved on the cost of the traders who won´t get their profits of
shorts (obviously these profits would be insane in case of a huge BTC crash).