He is unnecessarily panicking. There is a technique to go through narrow rock entrances like in caves, natural temples, etc. The widest part of your body is your shoulders. Not your hips. You need to have your hands out in front of you. I have seen really obese uncles go through easily.
Check this video out of Kanifnath Mandir.
@-=virus=- check the OP comments. Is that Munawar in one of them? Slimy thin guy with a pencil moustache (Muhammad Munir).