Outdoor plants droopy after frost

My two himalayan golds were outside doing splendid, then a freak freeze came and that was two days ago. They are now droopy and seem to have stopped growing. The leaves are not wilting all the way down, they are just kind of drooping. What has happened? Are they stunted and now stuck or something? These are supposed to be able to handle cold nights and warm days. Help!

watch the weather forecasts and if theres "any" threat of frost cover the plants with glass or plastic.

Well whats going on with them now? Anyone know?

it should come back. just make sure they stay warm enough from now on. but new growth is going to be slow for a little while.