Blue clove polyps

[lastlight]

I know these can be a pest just like GSP.

In my last tank I had a rock dedicated to GSP that was isolated from my main rock structure and I observed no spread beyond that rock. I had read that when the colony reaches some saturation point it can actually jetison polyps to then find a new home but I never witnessed this.

Would it be possible to contain the clove polyps in a similar manner? Or is there a similar saturation point risk? Or can crabs etc tear polyps off to then be set free and spread?

I'd love a splash of blue in the front in my low light area.