I dont think the big rise was window dressing for the AGM, as...

I dont think the big rise was window dressing for the AGM, as there was huge volumes traded from 18/10 to 29/10.
In total, over 51 mil shares were traded, over 10% of the issued shares.

We know who a couple of the sellers were, but we dont know who was buying.

The volumes have totally dried since 1/11 and the share price has been allowed to drift back down on low volume. ie the buyers have stopped.

Why would the buyers push up the price so quickly and then go quiet?
Maybe they didnt like the information released about write downs or profit outlook.
Maybe they want their identity to remain private and are staying below the 5% threshold.
Maybe they want the share price to drop back before announcing a takeover offer.
Only time will tell.

Technically the chart looks great, big rise on large volume, then a pull back on much lower volumes.