Hopefully it's someone being smart buying up all the TRC on the exchange to get it out before the fork hits, if you look at coinmarketcap.com they only spent ~$340 and based on the exchange data they got under 50k.  I checked block explorer saw one big move @ block 827,361 for 46,010 TRC

Imho although vircurex.com has worked for me in the past,  stay away at all costs they have to many liabilities and offer no support and minimal information about the exchanges happenings and maintenance.