So the (open) question, somewhat restated, remains: if the Levitical priests resume animal sacrifice in the newly rebuilt Temple, and if there is a "cloud-like" phenomenon associated with the rites and rituals, how will one be able to determine whether it is caused by God, Satan or other, especially given the fact that there is Biblical precedent for such a thing happening at the time of Solomon?
Sorry I didn't give a better answer. I was on my phone and posting from there is a real hassle these days. I am not sure what VC has set the ad saturation at, but it feels like it's at Total. I have a blocker on my PC so I don't notice them, but not on my phone.
Anyway, I think I may have answered this already in my post to Karlysymon, but I'll expand.
The third temple won't be built for God's glory, and it won't mean anything to him. He doesn't hear unbelieving prayers, and he is currently not accepting sacrifices for sin. Any spirits in this temple will not be from God. Of course, the Jews won't be looking at it quite that way, but they will still be blinded.
Christians like me look at the red heifer and it's relation to the prophesied temple as a sign of God's sure word. He said it would happen, and lo, here it is happening. It doesn't mean we think God approves, or that the Jews are doing the right thing.