RS Pikes – complete loss of +ve air?

Hi.

I was out with a mate last night on the West Worcestershie Alps when his RS Pikes gave out.

Fork sagged completely into its travel with a complete loss of positive air.

When he got home he pumped them up and they’ve remained at pressure despite some vigorous car park testing.

Has anyone had this before? It’s almost worse than having them break completely because you never know whether it was a one-off or if it’ll happen again at an inopportune moment.

Thanks for any help,

Ben