Tacx Flux no resistance

I was in the middle of a ride last night and suddenly I was pedaling without resistance. It was as if on a road bike the hub would stop connecting to the wheel. I'm hoping I won't need to replace the hub, but I am fearing this is the solution. 

I've powered it off and unpaired Bluetooth and checked for fireware updates but that hasn't resolved it. 

Wondering if anyone has experienced this too?