Air bag issue

Bag was pressing in scrader valve and  air pumping was just coming out schrader valve. 

Jacking up allowed bag to not hold schrader in,  but bag was stuck on itself and only inflated one side. 

Lots of pressure. 

Jacking was not going well. 

Used floor jack,  removed bag and inflated off coach.   It “popped”. Back in shape with major force that could of injured someone.   But now bag is back on. 

Have had bag deflated before.   This was first time having this issue.