I object! 91 degrees is not upside down... it is just another "degree" ,if you will, of sideways. Here is how I look Ifat it. you need to support your shoulders, because that is where the force is going, then the element is upside down. If the force, more directly applies to your legs, than you are not.
Sure... on some rides, you are forced into your seatwhile going through an inversion, but if the ride stopped would you be supported by your shoulders on your restraint? In MF'a case (even with OTSR), your body would probably be supported by your side/shoulders.... Oh I don't know what I am talking about, I just know, that 122 degree's does NOT classify as an inversion! Thank you, I will now go back inside my cage. :)
(What does it matter anyways, will MF change if somebody decided to say that it had inversions? I think that it would still be #1)