[Hostile]

I see this locomotor andwas wondering what it might do?

Locomotor WebbedLocomotor ; don't want these to move or turn
Surfaces = GROUND RUBBLE
TurnTime = 999999999
TurnTimeDamaged = 999999999
Acceleration = 999999999
Braking = 999999999
MinTurnSpeed = 100%
ZAxisBehavior = NO_Z_MOTIVE_FORCE
Appearance = TWO_LEGS
StickToGround = Yes ; walking guys aren't allowed to catch huge (or even small) air.
End

[Kelso]

My first guess would be the locomotor for things that are caught in Shelob's web.

[Eradicator]

Yep, I guess they are upgraded to move or something...

[Halbarad]

play the campaigns, there is a mission where there is units that just sit and wiggle until they are destroyed and units come out of them, also look in objest creation list.ini there it shows units that are created from the webbed creatures being destroyed