Looks gone to me, even checked my wallet address through blockchain.info and it seems empty gg. Atleast i didn't keep my main pool of BTC's there.
It is shared wallet, you cant check instawallet ballance through blockchain.info, when you deposit to your address it is ALWAYS gone within one hour or so, but when you access instawallet URL, you see the balance.
I believe the few bitcents I have there are safe. Lets wait and see.