It sounds like product overload or buildup. The dimethicone copolyol in the organix low-poo is water soluble, unless your bottle has a different cone. Live Curly, Live Free: Silicones Not All Created Equal
It shouldn't really cause problems if water-soluble AFAIK
The Pantene mousse has polyquat 4 high on the list... this could be causing problems.
Shea butter can build up as well on its own, if you're using shea and polyquats and water soluble silicones and mineral oil, hmmm these could be all holding hands together on your hair and not in a good way.
Regarding your routine, it is very very heavy on moisture and not balanced enough on protein. I would never be able to use GVP CB regularly as my hair would quickly overcondition. Cure Care may not have enough protein either. Just noticed you're using sally's kpak and not joico kpak... are the ingredients similar? I would still suggest you go for another cleaner protein treatment. If you get overconditioned easily, I'd skip the leave-in.