I reckon he is restored to his prime.
I really do.
In his prime, just after retiring early from the track, his muscles would ripple as he walked. A lady friend of ours when she first saw him stated "I could never own a dog like that". Shocked by her blunt outburst, we asked what she meant.
She said "I could never have a dog with better legs than myself".
His last rib also had a strange twist. Just as it came to its end, it turned out. There was this little nub that stuck out. Later, after converting our lean, mean, racing machine to a more wide body version, it was no big deal. But when in his prime, it was an uncomfortable jab to lay on his side. He over came this in his own way. For years, he slept on his back, with his legs straight up in the air.