The sudden strength of the air current at the start of the inhalation has him grabbing for the cavern wall and dropping into a lower stance to brace. Once it lessens a little he tucks his flashlight in his waistband as before and heads upwards in a second climb.

Best to not continue circling if that rush could worsen by going any further. Especially since he is near where he has been trying to get if the mouth is somewhere right ahead.