I'm not certain, but I think he is playing with a few common phrases here (and not very successfully in my view):
- to turn (an offer, an idea) down means to refuse it
- to turn (the the volume, the gas) down means to reduce its intensity
- to put (something) on a back burner means to postpone it or give it lower priority
He is using the metaphor of cooking food on a stove to refer to the decision-making process within cricket's governing bodies. So the three possibilities he is comparing, for the different suggestions that have been floating around, are:
- "approved" (i.e. a suggested idea is adopted) - this would be the food being fully cooked and taken off the gas
- "turned down" - from meaning 1 above this would mean that the suggested idea is refused, but from meaning 2 it has its gas turned down (to nothing or nearly nothing)
- "left on the gas" - no decision is taken either way i.e. the cooking/decision process continues (no doubt producing a lot of hot air and gas in the process!).
Note that meaning 3 above is not referenced directly, but implicitly its metaphor is being extended.