I'm hoping they had to remove the footer to clear a path for the gigantic crane that was just moved out of the internal volcano area. However, I am also less optimistic as well about getting the rockwork shown in the concept art. We will probably know in a week what the plan is for this side of the Volcano.
Yeah I had this thought too however I then assumed they would have removed the crane from the right of that purple support as there appears to be enough room comparing the width of the crane and the gap and also that is where it was located for the last few days. As you said though I'm sure it wont be long before we get a good idea what will be going on those footers, if anything. Now the cranes are not needed in the centre if anything is going up I would expect it to happen very quickly starting around now! We shall wait and see.