Quick little statement, Recording (Demos) can be done by /record in your console (Hit the ~ "Tilda" key next to your 1.)
But what I really want to say is, if you're an admin in a league like TWL (Team Warfare League), you are more than likely an idiot and call almost every shot of a supposed cheater, blatant. I can't count how many times I've been asked for my demo and then people watch it without realizing comms from teammates or just overall awareness that the player has of the situation and calling the shot blatant.
With that being said unexperienced and obviously corrupt (IM NOT POINTING FINGERS) admins should not be involed with any anti-cheat work for this league. Solving this problem is easy, have a NON-biased Representative/admin in all of the participating LAN centers. If this is not feasible then have NON-biased Representatives/admins spectating the match. The spectating admin should not be required for all matches but by team request. The team that has suspicions of a player/team can contact an admin via pm on irc and request the admin to spectate this match, obviously the admin assigned to the match should be required to exit from and Instant messagers such as Xfire, MSN, AIM, or Yahoo, or any I missed...
The admin will obviously keep his eye on the suspected player/players. Also since iGames is already using cal rule sets, they may need to update their PB configs and Competition Mod's as well. PAM is not 4.01 with drastic changes and also cal has approved the No sway mod which fixes the sway glitch. If you are unaware of this glitch goto the calforums and do research on it, I believe there are a couple youtube videos with talk about it, but I'm not sure which ones really demonstrate the actual glitch it self and fully explain the problem with it.
But back to the admin thing, it should be fairly simple to stop this supposed cheating. I was watching the irc last night in fact and apparently a center was actually caught cheating, as for who it was, they wouldn't say. I believe they were caught by possible PBSS (PunkBuster ScreenShot (If you don't know what a pbss is do some research, its an anti-cheat system built into pb) but again igames admins did not release and info on the subject other than a center was caught.
Hope this can help.