Actually Saenger, its willy's server he should be able to do about anything he wants, or since you are representing him at the moment you should be able to do just about everything he can. I just made a post in a forum at a site that tracks my boinc credits to inquire about a possible solution to a problem of lost credits. I figured it would be as simple as typing a post, or checking on a persons stats that you would see that 112sparky made 463,086,928 credits at Dnetc and the cpuid got split and with a click of mouse, manually, presto cut and paste we are back in business. but I guess that cant be done. correct ?
The name is worth nothing in BOINC, just search for John or admin. OK, 112sparky or even Saenger seem to be unique, but that's not relevant. The only relevant item in sorting out who is who is the CPID, and a site that sorts through ~300 *.xml (host, user, team) has to do so automagically, not manually, depending on whether the name may be unique or not.
The .xml are created by the projects, and only there. They are created between once per hour up to once per day. The stats sites only read them and process the content to something better readable, and even connect different accounts on different projects through the only workable way, i.e. the CPID. The CPID is as well created at the project and written in every new .xml.
If there is a second item that links accounts together, and that can never be the name, it could be done by some tricks, like Willy does for BAM!-users, who happen to have another unique ID.
If you look at other stats sites, you will see the same thing happening, there even without a chance to correct it via some other ID:
(No deep link possible, but as well 2 CPID)