The pictures that hit the Internet were also the first time that the rocker was seen since his notorious fling with 20-year-old Russian bargirl Ekaterina Ivanova.
Wood, 61, was spotted wearing his wedding ring although his wife Jo has moved out of the house following the scandal.
She is however, planning to visit him in rehab.
The rocker is said to have laid bare his feelings during therapy sessions at rehab, telling counsellors that he is in love with both Jo, his wife of 23 years, and Ivanova.
However, he's certainly not been acting the spoiled superstar reveals once source.
"Ronnie acts like a regular bloke, no one can believe he's a rock star," the Sun quoted the source, as saying.
He has completed two of the six weeks of treatment at the Life Works centre in Old Woking, Surrey.