My apologies for 3x post but I'm on my phone and cannot edit.
Successfully recovered the card.
My PC wouldnt even boot if it was in the PCIE slot...
The trick is simple:
1. Unplug PSU from wall socket
2. Remove card
3. Wait 20-30 mins to reset pci-e safety switches
4. Replace gpu in second pci-e slot, not the same pci-e slot you bricked it in (DO NOT replace pci-e psu rail back into card, leave it powerless)
5. Plug power back into wall
6. Start PC, should boot into...