I just thought it might be confusing, and since he'd just signed up, I thought it would reduce confusion to change names before he got in. It wasn't THAT big a deal, just something that I thought might be easier for both of us. I didn't want to get him banned. It's like downloading songs off the internet. You don't know the damage you've done until you find out that Brittney Spears had to get a Gulfstream 3 instead of a Gulfstream 4 because of people downloading her songs.
I found in a 20 second search that there has been at least 5 versions of Paine already.
I think you already post in such a high quality way that is unique to you that you won't have a problem.
That is just my opinion though.