What's that corruption curing potion again?
What sort of gear do the other two people have? Do we have any of those bombs left?
The experimenter drider might have a better idea for avoiding Sydney dying.
It also sounds like those orders lead to the death of Sydney, and you're giving us a re-do. I like that, but I genuinely have no idea what to do here. We have no magic and we have no time.
Anyway, guessing we need to take her away. Instead of tackling her, what could work better is a net, and a matress. The net we could just use as a bit of tarp, the matress to cushion the fall and provide more room for handholds in carrying her, and the bombs should make good distractions. We can also use a chain to drag her, and Yuniiki should be able to keep any stray lizardpeople off of us. If we can't find a matress, well, we improvise. But throwing a tarp and dragging her down with everyone's collective weight should do it, and adding ballast should get things done.
Also, Jumping Spider. Instead of having Yuniiki tackle, maybe our other drider should jump over her, with or without the tarp, and with one of the chains. We could then drag Sydney through the air, down somewhat, and away from Jack until we can press her against a ceiling or towards a doorway to put more force on the bubble. That should pop it and then we can get out of here.
The goal is to get something on top of Sydney which we can use to pull her around, and possibly out of the bubble or just pull her and the bubble in a direction to where we can apply enough force to free it. We use bombs as distractions and work hard.
If feeding her humans is the only option, we do it, but we see if the experimenter has any other ideas with Sydney on the ground. I don't really trust her, but she wants Sydney to live.
Hell, if she has to eat the Drider.. Does she really need all those legs? ;-p