This is what happens when you allow uncontrolled and unregulated asset transfers. There's a reason that pretty much any index/stock in the world freezes when the daily drop exceeds a certain threshold (i.e. Japan, JPX, has a limit of usually ~7% [1]).

This prevents panic selling and even though seems like a "delaying-the-inevitable-drop" cop-out, it really does work.

Greece Government are stupid as hell for letting everybody sell their homes all at once. Mass selling off in a region will just cause the housing market to death spiral, just like it does with stocks.

[1]http://www.jpx.co.jp/english/equities/trading/domestic/06.ht...)