Glad to meet you, and welcome to BYC. Besides posting to the Emergencies Forum, as 2 Crows suggests, you might want to consider reducing the probability of future fox or other predator attacks. If it happened when your chickens were out free-ranging, that probably means you need to stay out there with them, or at least run a radio on talk stations when you can't be there.
and here is an article for those with really difficult predator problems: Electric Fences for poultry.
and here is a really helpful article on rooster behavior. It's really more an explanation, that might help you think about how to respond to problem rooster behaviors.
Hey there, we're so glad you have joined us! Welcome!
I'm so sorry about the fox attack. They are nasty predators.
I would look at the link @TwoCrows provided for the Emergency Forum.
And good luck with your rooster.