So,, i see the image was broken.. Here is that.



When shaman spawned on ground, all teleported to up, corner, right.

?
Looks like the shaman did the "B glitch" using runes (assuming since it's a mechanic)
and , there's balloons there so the shaman could've ballon'd you guys and put a B plank on the balloon, causing you (and the other things with the B anchor) to that area.