I don't believe so. I've had problems with my starter before, but this is different. It sounds closer to the fan in the front.
I don't think it is actually hitting the shroud (I'm making the assumption the shroud is the plastic covering.) It is rocking, so that could be it.
If I could have your opinion on how much of a problem this could be? I'm planning on a longish drive soon, and to know would be nice. Thank you very much!