It's not dead. You can crawl around on a single live wire as much as you want with proper grounding when getting to it. As in, you don't touch the live and ground wire at the same time.
Slip, and your foot touches the other wire though? Yeah, you cooked or in for a drop.
You absolutely can not touch a live wire if you're grounded. Birds (and this plant somehow) do it by landing on the live wire without being in contact with ground.