It probably is related to the cleaning. I would do a bit less really - maybe spot clean twice a week and don't do a full clean, just a partial clean. With spot cleaning a substrate clean should only be necessary every 6 to 8 weeks, if he uses his potty. I tend to leave the whole nest alone - unless it is pee'd in - and then replace a bit of it that is dry even if whiffy and put more strips of toilet paper nesting material out in a pile so he can rebuild it. I don't remove hoards unless they are pee'd on or taking over. Most fresh food like veg gets eaten straight away rather than hoarded, but you need to keep an eye out.
He is probably used to the clean outs by now, but it does help not to do it all in one go. Funnily enough Newt has been running up my arm too - although in his case I think it is more he is trying to find somewhere warm and snug - they do notice the cold in winter. He sat on my shoulder under my hair
