I hope so, as wookiee is right. There is no way to 100% tell that is what caused it. Although the one saving grace is I sent them an image of which bag the pro was in and I have no way of knowing which bag fell from his care (I only heard it). If it's the same bag, they may try to help me out.
I've never left the pro out of my care until that time. I carry it with me at ALL times.
Grr