Even those Bitcoin will be sold to the market, who cares? There are still a lot of people buying Bitcoins these days. There are still buyers.
This could be a FUD also that they are spreading.
It is not real reason of this fall because Bitcoin has rallied from $17k to $25k and it must be pulled back. I believe that Bitcoin after this pull back will climb gradually to $27k or $28k and we will get another fall that can be bigger than this one.
Mt.Gox is a very old story and with high trading volume of Bitcoin market nowadays, it does not cause big effect than in the past. Don't panic but I know people will still be panic.