No moles are required to confirm that something is not working behind the scenes at Spurs.
The evidence of our struggles - and of our defensive frailties in particular - was there for all to see against Wolves on Sunday.
Ange Postecoglou may not be physically responsible for individual player errors as they happen on the pitch, but he is responsible for creating a positive environment on and off the pitch where players are fully competent and confident in their roles and responsibilities.
Ange is responsible for training the players, or at least for managing staff who train them. He is also responsible for choosing which players play in which position and in which games, for deciding in-game substitutions and wider tactics, and for managing a group of elite athletes with individual egos, hopes, fears, insecurities and limitations.
All of these things have a direct impact on how players perform in games.
It is not an easy job and, if you get it wrong, it can look a lot like this whole season has for Spurs.
Although lots of us are still holding onto the hope of a trophy in the Europa League, it is becoming increasingly difficult to see us emerging triumphant from that competition and, even if we did, is that really enough to justify another season of Angeball?
Whatever the board decides, what I do not want to see is us keeping Ange for another season, only to sack him at the first sign of trouble part way into the new season.
If we are going to get a new manager, they need to be lined up now so that they are in place to work with the staff over the summer, and with the squad for the whole pre-season.
Anything else would be, well, Spursy.