Probably doesn't make much sense to experiment on a single plant but since I have one that always opens with a fairly straight style, I decided to test it anyway. A cultivar named YELLOW AURELIAN will be our test plant. Our test bud is the bud in the middle and our standard pollenated flower will be the one to the immediate right of it.
Test Bud. Forced open and green pollen removed. Note that there appears to be very slight upward bend in the style. In reality it's not that curved but the camera affect makes it look more pronounced that it is.
The unpollenated stigma was then protected with foil
Our standard is a flower that has been open for I day. It was given a dose of pollen from a Lily Garden Pink Trumpet and treated in typical fashion.