meh 4900 to 4500 is nothing really, a proper crypto drop would be from 5000 to 2000 in two months or so, then a slow steady rise/stagnation for some time, then a rapid and explosive gain to new heights, and...repeat. nothing to worry about. Now if a major exchange were to go all out GOXX then Id start to worry.
Now that... I would like the see that just for the spectacle of it. I wasn't around for the last few times BTC dropped off a cliff like that. I can't even IMAGINE the panic.