I'm a Witten fan, but if it were not Witten, I would fully think this photo was a 5-minute drive-by cameo shot. Why? His clothes are clean and neat. His face is not red (his face gets red easily). He's not wearing a hat which he needs for working in the sun given his thinning hair. He's wearing street clothes and sneakers. His shirt is a long sleeve shirt that looks nothing like what the other workers are wearing. And, and this is the biggest red flag for me, he's not wearing gloves which I cannot imagine most people forgetting, but especially a football player who needs to protect his hands.
Again, not bashing Witten and knowing the kind of guy he is, I'm willing to give him the benefit of the doubt and think this is him just arriving and someone is bringing him some work clothes, a matching red shirt and, most importantly, some work gloves.