Maybe some of the ppl being banned have also been using or have used other bots in the past as Shadow Bot and Pocket Gnome have been taken down in the past week or so and if blizzard get their hands on their user base or credit card payments its an easy job tallying up CC details to people playing wow. See this post Blizzard wins $7m in bot suit | GamesIndustry International. also thanks to this ruling it has freed up resources within blizzard to investigate other people and routines. Just a random thought ......
It's possible some others may have been using it, but I have not been. I was suspended for 72 hours three months ago, haven't touched the bot since until last night when I did Lazyraider only (no targeting, no movement, no interrupts) for an hour and a half. Thirty minutes after I left raid, I was disconnected and banned.
The problem on your ban IMO is that you were suspended before, the flag or whatever still alive and you probably get monitored somehow. Your case is not simple as it seems, if there's a notification for a GM or even a black-online list for the users who were 72h suspended, they might check users often, and if a good GM reads your battle logs and compares with a LazyRaider user, your can get caught by the bot patterns generated by HB combat routines... They didn't came out of nowhere and detected you, you were flagged and they were waiting for the opportunity to get you with your pants down again. And if you question yourself about how they detect Combat Routines, it's easy, ,visually could be hard to tell (even it's not) but from the logs and movement patterns an not even so skilled GM could follow the tracks left by a bot user. They might have a database or enough knowledge around HB usage and a lot of stuff to compare and be certain of the use of the bot, in all of it's functions, from archaeology to plain combat routines.
