Cut it back, the leaves will not survive. The leaf stems are bent and creased, so cut it back well before the crease.

But I might be tempted to leave that job until we are sure there will be no more hard frosts, as they might protect the crown.

Mine are the same, in fact worse looking, but it happens every year and I just leave them until there is really strong new growth and then tidy them up.

I'd leave 'em for now too - there are new shoots appearing, but we're supposed to get more snow before 26th March, with the month remaining cold until then, so leave them a while longer - those that are seriously damaged will die back anyway after another week or so and you can just cut or pull them off then.