Anyone have a theory as to why DIO is taking a big dip south? I...

Anyone have a theory as to why DIO is taking a big dip south? I have heard nothing to suggest problems with the pit dewatering (like the dramas at White Foil), on the contrary the grade reconciliations seem to be well above BFS for the pit shell.
Talk around the traps in Kalgoorlie is that the UG is due to go ahead as planned. Should see the UG BFS shortly, April I think?
Greatly oversold & due for some upward movement.