Join the club. I've lost 4 hours of grinding Steel Path circuit due to the broken state of it. Your best solution, currently, is to find where the lightning hits anywhere on the circuit, and stand there and die, until you run out of revives. This makes Citrine the worst Warframe in the game for me because I cannot recoup my lost resources when I outheal the lightning. And it's the only way to salvage most of anything in the circuit. That's what we have to resort to. Killing ourselves off in the circuit.