Who's PR is forged? Yours? DMOZ? I'm going to guess it's yours? Why would DMOZ "forge" their PR? They could care less about it.
Likewise, I am going to guess it is your domain that your talking about. The PR of your domain can be forged and it has nothing to do with whether or not it has been included in DMOZ. I would hazard a guess that the domain has been 301 redirected at some point in time.
PR is not, or should not be a factor for getting listed. So if that is the only left handed thing the site is doing then there is likely not a problem with it's listing.