AFR another, page-15

I'd bet money that the AFR's version is correct. It would explain the tweets from management this morning which said firstly that they've sent their explanation to the ASX, and a second tweet seeming to question the ASX as to why they had not yet released the statement publicly.

An educated guess says that the ASX rejected their first explanation as inadequate and asked them to provide more details before they would release anything from GSW. GSW was unable to do so before trading began so they requested a trading halt.

Just my speculation of what happened based on the circumstances - I could be wrong. I am not asserting anything happened as a matter of fact.