The emperor Havi Hos Sigfreed of the Vulcan empire created a perfect escape plan for Kahn to escape while he himself promised to cover his tracks and made necessary arrangements that'd also help him keep hidden unless Kahn himself exposed his identity.
In his plans, Kahn as Kahn Salvatore, the mega-talented Saint Blacksmith who became famous just this day and almost won the Blacksmithing Duel would be declared as collateral damage during the battle between Hero of Fire and Hero of Darkness.
After that, Havi planned to use this incident as a pretense to temporarily assume command of the church in the name of protecting it as their empire's vital institution.
Later, he'd subjugate the Church of Hetrax and pull it under the direct control of the Imperial Clan. And then, he'd root out all the traitors and conspirators, reforming the church and deterring all the possibilities of any other coup or treason.