Yes, I doubt very much that this is the case. It is very obvious when you upload remotely open load links to openload. It is instantaneous, which suggests that files are not copied and that the same file is simply assigned to multiple accounts. When a DMCA occurs, the actual file is not deleted, but that specific link is deleted. When you think about it, this is the logical and most efficient way to do it.
I can not confirm that this is really 100% of the case, but this has been my experience to remotely load 700 OL OL links in OL, publish them on several popular sites and, after a week, I only got 19 DMCA links. If it works the way I suspect, Openload will never confirm it because it is illegal if you do not really remove the copyrighted material.