HH,
its almost certain that the politicos are/were waiting to see how Labour and Corbyn faired at conference - every bugger knows that the PLP and Corby are completely at ods over defence, and the Tories are waiting to see if Labour implodes all by itself or needs a push.
it looks like they'll need a push - Corbyn has quite sensibly 'back-burnered' his Defence agenda and is waiting for Conference 2016 (which will be the first conference under which his rules on policy making will apply) to start setting policies that he knows the PLP won't stomach.
the tories take the view that his domestic economics stuff - housebuilding, taxation etc... will be pretty popular with the electorate, so they need to throw a spanner in his works before he can start making real traction with those proposals. so, (in my political opinion) expect a series of votes on defence/FP issues that will split Labour assunder...
MPA, Trident, Syria, SDSR etc.. all will make Labour look utterly divided and spending its time decending into interminalabe interniccene infighting.