It's just events, nothing to lose your mind about.
Blockland events
It'd be delayed onPlayerTouch events that show something like client center print.
carried on with a map change.
What's RadiusImpulse
I had stuff like this happen, all you have to do is clear one person's bricks, see if it stops, clear the next person's bricks, see if it stops, etc
Imagine a forcefield around a brick. If you go within the specified area, it pushes you away