The kicker is you can't use organic fats for your pulls in this tek....
You fundamentally made soap when you mixed the lye and vegetable oil, a stable emulsion.
Use a different NPS in this situation.
Oops sorry I just saw your title
Generally you have to add acid to the soap to crash out the fatty acids. Something to 'desaponify' what you had there. I think I know which acid I would use in highly diluted form but I can't recommend it because I don't know everything about the process and if you are working with those materials you probably can't obtain it all that easily.
It's worth mentioning that there's no reason to try for such a high ph with the foodsafe style tek, this can keep happening, and lowering the ph will resolve it but why not just avoid the problem? Or if supplies are limited folks have resorted to naptha-free lighter fluid as an alternative, that with your makeshift lye would work.
In addition using less veggie oil could reduce the chances of making soap. Idk there's a lot going on with this tek.
In addition a thinner oil like olive or even better- sunflower might be ideal.
"The world is his, who can see through it's pretension...see it to be a lie, and you have already dealt it its final blow..." -Ralph W. Emerson