Everyone is interpreting it as ntkrnl kind of calling him out.
My take is its a direct response to CBOAT's initial statement about "duelin leakrs!11!!" saying that CBOAT plays best fiddle (i.e. ntkrnl is second fiddle to CBOAT).
But there is really no way to be sure of anything at this point. I'm just holding out til some of this stuff is confirmed, which according to ntkrnl shouldn't be all that long.
Again, I want to believe.
Yeah you're right: http://idioms.thefreedictionary.com/fiddle