Ayurveda is considered a pretty dangerous drug by the medical community, but of course it your husband's decision.
Is it possible he has had another small stroke that is causing his symptoms? Is he taking diuretics, they can cause cramps? Hope he is more comfortable, keep us informed.
It's possible that it's the statin, but shoulder pain is not that common, Has he discussed it with his doctor? There are other statins that have few side effects than Lipitor.