is it possible? can i rotate it 45 degrees?

i remember seen a presentation were they animate the pyro container, but don't remember how,

Thanks.

Yes,easy to rotate a fixed angle,but an animated angle is a little bit complicated.
You can use parent container to rotate,and it will use force to restore data's position, not very perfect, you can also resample field with transformed position transform by the transform's difference btw frame.