Now that I think of it, I would be inclined to give the hide situation priority over the food. If he's not using his hides he probably isn't feeling too comfortable and that is certainly enough to keep a BP from eating.

In general, I think 6 days is a bit early to start really getting worried. A BP that old can go a few weeks without food easy. However, this might be a good time to collect any history on him you can. What do you know about his prior arrangements? Was he a picky feeder? If the people you bought him from are halfway reputable, the will be able to give you helpful advice in this case. I would avoid being accusatory or emotional with them, though.

Also, my experience is that they all act a bit funny during the shedding process.