I have tanned many hides and they all get fleshed then put in the tanning solution, taken out, tacked on a board then just before they completely dry they get broken and oiled to soften them up.
The process usually takes a week for large hides.
If the oil you used is water soluble I would say re-soak, take them out and tack them to a uniform shape.
Is the hair on or off?
Kevin.