Given that he tried to register with false info, I'm concerned. This is a business site, not a personal site where limiting the amount of personal information shared is an appropriate privacy measure.
You'll recall that I already ran into a situation once on this very board a few years ago where I did not feel I could be candid because of a manufacturer's response.
If a manufacturer rep wants to post, then he/she should be totally honest and above board with their information and their affiliation should be included in their name and signature on every post. At the first sign of chest thumping or spinning, they need to be warned. Repeat offenders, booted.