The spots on leaves are hail damage: nothing that can be done about it.
The contorted growth is a physiopathy, meaning not caused by a pest or disease. It can be caused by excess nitrogen in the ground, ground freezing again after the new shoots had started emerging or by stems having been cut too early last season thus not allowing the rhizome to store enough energy and hence to lack strength during the current grow season.
That final picture though... it looks like the rhizome is starting to rot underground. Have you got any drainage issues?
