Basically, if it is moving correctly, don't worry about it.
Otherwise
If it moves in the wrong direction, change this:
AddPropForce("jumpscare1", -10000, 0, 0, "world"); //Moves negative X relative to the world.
To any of these, and figure out which one works best for you!
AddPropForce("jumpscare1", 10000, 0, 0, "world"); //Moves positive X relative to the world.
AddPropForce("jumpscare1", 0, 0, -10000, "world"); //Moves negative Z relative to the world.
AddPropForce("jumpscare1", 0, 0, 10000, "world"); //Moves positive Z relative to the world.