I don't see anything looking like spider gene, so yeah I would be more concerned about other factors as Bogertophis had mentioned.
I've had a few non wobblers get themselves confused on a strike if they missed. And some slow eaters or even weirder... When they try to eat the side of the rodent. =_=;
Without seeing the snake in person, I can't give any advice really about possible wobble. I have seen it been over exaggerated and understated before depending on situations.