Slow Down Slow Down. Stop. Think. Breathe.
Ahh that's better.
I understand the panic - I was just there myself recently and the panic was overkill, worry and quick action is called for -but not panic.
separate the rooser from the girls. Put HIM in the crate...now.
Tend to all the girls. You may find most have injuries.
Wash your girls after you inspect every one of them paying close attention to the hidden area under the wing.
While you wash with a mild soap and very warm water, inspect for small hidden scrapes and scratches below those downy feathers.
After a good bath, wrap them lovingly in old t-shirts whith their heads out. Put down a big blanket and set them on the couch one at a time, close together, and cover with a large light towel. Do all the hens and them leave them there while you go out to clean their quarters. Mkae sure they are not in a draft or cold from below.
By the time you get back in, they should be ready to have their wrappings changed to dryer ones. Do that. Then take care of your family or whatever you need to do, maybe watch TV and listen to the hens chirp contentedly.
Let each chicken come out of her wrappings separately and wander around drying off completely - this is a fast process - maybe 5 minutes at most.
Treat each injury ( and some of them may have opened up horrendously from the water) with neosporin.
Put them in the clean cage.
Add a capfull of apple cider vinegar to their water and increase their protein intake ( grower feed is higher in protein than layer feed - just check the lables and no treats while they heal.
Wash only if they get dirty or every 5-7 days.
Neosporin every other day as you want it to dry and heal.
These animals are amazing! 1 of my girls had a slash 5" long and wide open. Another had a hole the size of a half dollar and the water flowed under the skin. The second is healed. The first is closing.
Trim the rooster's nails and his beak. I use a nail clipper for both but make sure there is no sharp edges to the beak.
I made my own aprons from an old heavy duty picnik blanket - you can too- no sewing required. If you have them comming well, just as good.
Good luck
PS My 2 yr old golden drives me crazy - when are they supposed to stop being puppie energetic?