Azaleas and Rhodies are tough plants and provided they were established ones, they should start producing new growth this spring.
I would not do much now..other than prune any obviously broken bits that are dangling off. Once the soil start warming up and there is signs of new budding...sprinkle some Blood, Fish and Bone meal or 'Rhodie food' around.
The new growth should produce some flowers next year.
As for your other plants...there is good chance they will show up as well. It all depends if the roots and the growing points were damaged and to what extent.
Don't give up with them...they are surprisingly resilient plants..