I'm not quite clear on how this works, but if I were to deactivate the package, any package that affects the same functions gets deactivated too. ...or something like that.
If something comes along after me and plops its package on top of mine, and then mine deactivates itself, I've deactivated them both.
In short:
Blockland > Someone else > Me > Someone else 2
I deactivate Me
"Me" > Someone else 2 are both taken off
Blockland > Someone else
Also, it didn't work anyway, the group still wasn't there. >:/