The gas struts are what pulls your awning tight. The motor just rolls the awning up.
Now if you look at slide awnings, they have springs and they have the holes to pin to keep them from unrolling when disconnected. Basically the slide motor is what unrolls them but the internal spring keeps them tight.
If you ever owned an older trailer that had the manual awning you had to flip a catch on the roller arm to allow you to pull it out. You then had to hold onto the strap when you flipped that catch again to roll it back up. That one had an internal spring.