Well...the logic might be a bit convoluted...but I believe I could roleplay it. From My understanding, Sardomin was deposed by his own people and replaced by his own right-hand man. Sure espionage from Xavax instigated this, but he may or may not know it. And even if he does, if he really hates Druzil or the people that supported him, or if Sardomin's character is defined as the MiNovan King-in_Exile, it is concievable that he would use any tool to get his rightful throne back.
And it just so happens that the best tool he could hope for is the Imperium of Greater Xavax
(which, btw, finally has 30 nobles again y'all! WOOTWOOT!)
