I simply see a great logical fallacy in your position.  On the one hand, you want us to believe that the Spirit is somehow actively involved on the earth, in such a manner that would prevent church leaders from making an error in what they teach.  That clearly suggests an active involvement by the Spirit: a choice if you will.  

The logical extension of that would be that the Spirit chooses to intervene on that point, but NOT on the abuse of children, nor (by your apparent believe) the likely path to hell of 85%+ of Catholics who don't buy into HV.  That's an interesting choice.  Does the Spirit actively prevent people from exercising their free will?  I doubt it.  So if a bishop or a pope chooses, of his own free will to ignore the counsel of the laity, why would the Spirit choose to intervene there, but NOT when that same guy makes a horrific call resulting in the abuse of children?  You clearly want it both ways.  I doubt it works that way, as the model diminishes God.