ASI
Firstly. If we don't make mistakes we cannot learn. Now that red tape has been introduced at your gliding club, it will probably prevent others doing the same. So there is a definate positive from your experience.
Remember PUDSOD Pitot blocked, Under-read in a DX Over-read in a CX. Static blocked, Over-read in a DX, Under-read in a CX.
You probably already know that.