Gotta agree with Hannah, 99.9% of pitcrew must be professional. Its a tough job. Not any old grease monkey from a back street garage could do it.
And yes, gotta feel sorry for these guys, now out of work, its these background anonymous people that get the cars on the grid, and more importantly, keep them there.
Its not there fault the organisational part of it fell to bits (for whatever reason)
Still, CVR had ex Seat Sport and GR Asia people, and with Flash running this weekend, I'm sure some of them will be working still.
(Fairly certain Jones had his old Air Cool/GR Asia crew with him)
Anyway, as Hannah said, most of the engineers/technicians are some of the best to grace the grid in recent times