bless your heart. I am sure he will be ok. Take him to a groomer and get him a summer cut. no one will ever know what happened and lucky for us, these little guys are pretty forgiving. His leg will be ok, just keep up with it, take him to the vet if you think it is bad. and when it heals..even before it heals...he will forget what happened and your house will be back to normal
don't beat yourself up too bad