I think thorough testing of SB also comes into play if they are to prove up reserves this season. It simply would have taken far too long to achieve what was necessary in both the Anderson and Nullara with the current rig, so if you are bringing in a crew to test the Anderson anayway, the sooner you pull off the better. Only Personally I remain very upbeat about SB. I think the Anderson has a good chance of getting close to stand alone commercial, and the Nullara is a bonus, albeit a potentially exciting one.
Some good reading on Pictor and Yulleroo while we wait: