If the unit is forced to flee for whatever reason, whether it breaks from combat, panics, or suffers from adverse psychology, the Night Goblins will flee as normal whilst all the Squigs become loose Squigs and each model makes an immediate random bounce. Any Squig Hoppers still with the fleeing unit are assumed to throw their riders and become loose Squigs (replace with Squig models if you have some spare, or ignore the riders just like the Squigs do!).