It's definitely worth looking more into. Like I said I personally have not had any tangled cords in non-cut eggs.
I am a very, very small little particle of dust in the wind in the grand scheme of things, but like I said, that's my personal theory.
Unfortunately there are very few breeders who do not cut at all, so conducting a survey on weather they've had a tangled cord in a non-cut egg could prove to be very difficult. I'll put my thinking cap on though and maybe get something going with that.