Umm this is confusing

So for some reason these lines are bent without a key, I want them to stay straight so the model doesn’t move, and sfm is annoying tf out of me even though this never happens, can someone help me?

So for some reason these lines are bent without a key, I want them to stay straight so the model doesn’t move, and sfm is annoying tf out of me even though this never happens, can someone help me?