At least BSN made it their business to find out what was going on and inform their viewers. It's a pity that the norm at most (all) clubs is to leave the paying public at the circuit completely in the dark.
For the record, my understanding is that there is a rule that if a tyre becomes unsafe, a rider may replace it with a spare but only one that has a similar level of wear but that is still safe to use. Obviously, the "similar level of wear" bit is open to interpretation and can lead to accusations of cheating. Steady, last night, was obviously trying to make sure that one or more Leicester riders weren't getting an unfair advantage by switching tyres. From what I observed there was no great argument but there was obviously a lot on the line.