It is not possible for 2 males to fertilize the same egg. If you pair the spider with her, it would be possibe to get a split clutch where some eggs are fertilized by the spider and some by the albino, but no albino spiders. I wouldn't use the spider because he could end up fertilizing all the eggs meaning you would get no visual albinos, just spiders and normals that are possible het albino. You would not know which ones are hets though until you raised them up and proved them out.