Hmm, I'll take a final guess, but I'm glad I made some progress at least.
Spider mode is when you take silent, hands-off mentality to gather large amounts of information, before utilizing it in a massive show of force however you see fit at the time.
Similar to how a spider watches over its environment, seemingly uncaring, before it kills an insect out of nowhere, and it goes back and watches again.
It's the aggressively passive strategy. I'm prob wrong tho. EDIT: Optimistic sticker mogs me to death NGMI