Some suspect he absconded with the funds and sold when he could https://bitcointalk.org/index.php?topic=208986.2140 (I know some may think of the commenter as a troll, but there is often truth hidden within the "spam" of some people). If that and the fact that some very established members have sold the majority of their holdings tells you nothing about what is will happen within the next little while... Well you are on your own.
Look at the guy that made those claims (haigtst) and his previous posts. He does nothing but spam nonsense (in this thread too).
While I can't rule out that he might be correct (if you throw shit at the wall long enough, eventually some of it will stick), I don't take anything he spams seriously and I'd recommend, for your sanity, that you do the same.