The 19000 BTC isn't even half of the volume that was traded per day the last couple of days. It is a big hit but i suppose it is recoverable.
I'm more worried about the wording in the statement where it states:
We are working to transfer a secure backup of the Bitstamp site onto a new safe environment and will be bringing this online in the coming days. Customers can stay informed via updates on our website, on Twitter (@Bitstamp) and through Bitstamp customer support at support@bitstamp.net."
I don't think it should take days to copy and check their environment, why would it take this long?
And updates haven't been provided since this morning on either Twitter or their website. No source for the last statement on Coindesk. I'm worried we won't hear anything for a few days now. And that reminds me of Gox...