"forced selling in alot of stock"...I wasn't referring to Tricom...

"forced selling in alot of stock"...I wasn't referring to Tricom as the seller, more that Tricom under pressure to settle, might be putting some heavy pressure on its clients to settle outstanding trades. If they have been letting clients run accounts out to T+10 there would have been a hell of a lot of pressure put on them by the ASX to clean up their balance sheet quick smart.
FYI CUS isn't exactly Robinson Cruisoe today. Fingers crossed that was the worst of it, since today was settlement day for all those positions sold for Allco by Tricom last Thursday, which incidently were all margined aswell. Hopefully you get the picture of how a problem in on corner of a market can affect a seemingly totally unrelated other corner.