I think it's an interesting concept. I've run across a little information on this, but am working from memory which isn't the most reliable.
One of the ways paleontologists distinguish dogs from their wolf ancestors is in the relative sizes of their teeth. Some of dogs' teeth, I think it may be the molars IIRC are a little smaller relative to the front teeth compared to wolves. Or I may have it backwards. The first appearance of this trait in the fossil record is about 14,000 years ago or maybe a little more. This also roughly coincides with the first appearance of the remains of small tame wolves/dogs in human encampments. Early dogs were found at Oberkassel (sp?) Germany along with human remains at the beginning of the 20th century, and the remains are around 14,000 years old.
There is evidence of domesticated small wolves in the Pavlovian culture in Eastern Europe around 25,000 years ago, but the website I got it from doesn't say exactly what that evidence is. There is a lot of info on the Upper Paleolithic in Eastern Europe at this excellent website:
http://www.anthropark.wz.cz/aagalery.htmI posted this a couple of years ago at DC and still like to visit it from time to time.
Anyway, I don't recall reading about any evidence for the existence of domesticated dogs with archaic humans. They may have domesticated dogs but so far nothing has turned up in the fossil record yet that I'm aware of.