I'll try to make a long story short. The party already fought through the first round of the Champion's Belt match. On the second day they decided to explore the area and obviously found the hidden Kyuss shrine. Bozal Zahol ends up killing the party's sorcerer. So assuming they dispatch the ulgurstasta, the party still has the rest of the tournament.
Should I make the party finish the tournament one member down? The plot point that you needed a license to compete and Ekyam had the only ones left makes it hard to deviate from that course. Especially since the registration period is over.
Any thoughts on how I should handle the situation?