Piccadilly Line trains management seem to have decided to haul drivers in for questioning, hoping that some intensive interrogation will magically improve the train service.
Managers appear to be nervous about the leaf fall season, and look like they are either setting up drivers to take the, erm, fall for the inevitable delays, or maybe thinking that by applying pressure, they can bludgeon drivers into inventing new techniques to stop wheels skidding on falling foliage. This is a strange strategy, given that all the evidence from recent troubles on the line points to other causes.
You may remember that management tried to blame drivers for the flatted wheels fiasco, only to be told by the formal investigation that drivers were in no way to blame. The real reasons, it turned out, were lack of vegetation control, poor communication between LUL and Tube Lines, and inadequate budgeting - all of which are rooted in privatisation.
Never wanting to allow the facts to get in the way of persecuting drivers, management have even gone so far as to use download information to accuse drivers. This is despite the fact that this information only tells them about the engagement of train circuits, not the actions of drivers.
Tubeworker's message to management? Leaf it out.