Not ideal but best case might be a case of cashing in some chips while they can to de-risk as a safe guard if U fails to rise. I'd be surprised if they intend to fully exit.
They initially bought in @ 30c, then did a big debt for equity deal @ 26c. RCF have a 1.15% royalty on revenue deal which cost them a further $10m (no equity) so they have interest to see Mulga come online.
This now makes Macquarie out, Acorn reducing, constant placement selling and now RCF reducing.