If they were worried about server admins correlating Apple's IP addresses with a new User-Agent string, the team could have VPN'd to a non-Apple network to access the web.
The user agent was something like "Mozilla/5.0 (Macintosh; U; PPC Mac OS X; sv-se) AppleWebKit/85.7 (KHTML, like Gecko) Safari/85.5", which people would have quickly correlated to Apple, not matter what IP it came from.