He now walks normally again and probably is used to the fact that his tail hangs useless down.
Fortunately cats recover quick and he got back his balance.
Now the only thing which is very hard for both of us is the fact that he wants to go out ! And this he manifests by meowing loud ! (very loud !) and that is terrible.
Arthur with his "walking cord" on the leash
Big Brother is still watching !
And after 3 h on leash and cord he finally agreed to nap !