Nope that is not how twisted umbilicus happen they mainly happen because of this
The more you mess with eggs right before they pip (like candling too much), or mess with them after they are cut (like checking on them twice a day) the more you will have tangled umbilicus, if you startled the hatchling they will tangle themselves up. (not my first season or first clutchi checked on them every day sometimes twice after I cut.)
When you cut you do so by doing a small flap and you put them back in the incubator until the emerge on their own you do not bother them.