My cat Specs did that several years ago. He jumped on the screen door and got his claw caught and when he untangled himself, the claw broke. He got quite an infection from it and my vet thought he may need to remove the entire toe but it turned out that it wasn't necessary. So please take your Sunny to the vet to be checked out. Cats hide illness and pain very well and he may be hurting and infection could set in. Good luck w/getting a ride to the vet and please keep us posted.