Yeh, well that little experiment (link above) fell flat, for ANZ... staff were disgusted at how low their company stoops for attention.
The "tipping they'll be out in 6 months", is on a losing bet too...
I see the Macquarie and Co "stunt" as nothing more than that. Putting some "ideas" into the media, to destabilize stocks, create uncertainty and hence gain from the fluctuations. "They" were obviously bored and thought this up over their Cubans and aged Scotch at the Gentleman club.
I think they might have been tied up in the very near fatal QF takeover... and who got locked up over that???