Think positive...
such thing is not new (not atleast to bitcoin)...
Bitcoin has survived in the past and will survive this too...
as to Mike Hearns statement, It just show his frustration as to things did not go as he wanted to....
The only concern probably is the chines companies having most of the miners... that can be resolved...
there is nothing to worry much,...
(this is my personal view... I donot even have 1 BTC ....

)