I think the white blobs are fly larvae, possibly of small-headed or spider flies, that are spider parasites
see https://www.google.com/search?client=safari&rls=en&q=fly+parasites+of+spiders&ie=UTF-8&oe=UTF-8#fpstate=ive&ip=1&vld=cid:a0e610e0,vid:2J_DwKt-nsA,st:0