There are plenty of A320's sitting on the ramp at DUB not being used at the moment since their previous owners have collapsed, perhaps Aerlingus could get a lease on some more aircraft to operate the routes. I think it's the fact that virgin don't have pilots or crew at the moment to operate A320's that means having to lease out the route. It'd also mean that the new aircraft could be painted in virgin colours, which has been rumoured.