ASX could simply have simply stated they were suspending ISX's shares from quotation pending responses to enquiries. Nothing more was necessary.
At the time ASX released the notice, the average reader would most likely have taken the statement to mean ASIC gave a tick of approval, which would have had to be a direction. So what point was ASX trying to make? Was the statement written by a kindergarten kid?
You're right about the SOR making the reasons clear though; it revealed it was all a witch-hunt.
ISX Price at posting:
$1.07 Sentiment: Hold Disclosure: Held