Is it possible to have the last potion of the jetway turned on a closer angle to the airplane instead of having it straight inline with the rest of the bridge, when the Jetway is in its dormant "non activated" state? Similar to how jet bridges look between aircraft usages?
It's technically possible and nothing in GSX or SODE prevents this.
However, it will look bad because, when the jetway is not active, is replaced by a static model, with huge fps advantages. The fps will collapse if all jetways were "movable" and movable means a jetway that is not currently moving, but CAN move, which is different than a static jetway.
This means the static jetway must be exactly the same as the movable jetway in the default position, otherwise you'll see a "jump" when the jetway starts to move, because at that time is replaced by movable jetway.