Since some people were in pole position due to advantages gained by betting on other matches prior to ESWC, all branches have been reset. As a consequence though, you will need to resubmit your bets for ESWC games.
As previously announced, the top 40 betters in Dota 2 will be awarded with a Dota 2 beta key after ESWC's end.
The reason why we also removed all current bets in the games are to avoid bugs. Even if you reset your 168 branches, if you would have placed them on a bet before the reset, you would still have gained winnings based on that (illegal) bet.
There was some controversy from users complaining about the advantages of some people, hence we thought it was the best decision to make it a clean slate for everyone. However that does unfortunately mean that you will need to replace your bet.
And as always, it is forbidden for users to own multiple accounts here at GosuGamers, so do not attempt to reach the top using that method.
UPDATE: If you still have more than 50 branches, please remove them from all bets and contact Tjernobylbarnet for an additional reset.
If you do go ahead and use these "bugged" branches in bets, you will risk getting reset later on instead.
Links
GosuGamers - 40 beta keys up for grabs