I was at CN too.
"They proceeded to have to tell one or two planes to remain outside the control zone (resulting in, as expected, orbits around inbound points"
I do believe it was 1 and they were not at the inbound point. I saw the aircraft just south of the township.
"spent at least another minute at least nonstop over the frequency confirming the location of every other plane in or near the control zone"
They do this each saturday and sunday when they open.
"so as to ensure the limit of 6 was not breached"
By reading the CASA information, this hasn't started yet.
"How very messy"
Did you see what was going on at 8.55am (5min before they opened)
Give them a break!!!! The bloke seemed to be working to regain order than make it a certain number.