NOTE: Below is a video of three members (Emirs Aslambek, Tarkhan and Ḥusayn) of the Caucasus Emirate explaining why they rescinded their pledge of allegiance (bay’at) to the Emir of the Caucasus Emirate Dokku Umarov. Their main grievance was that Umarov suspended the Majlis al-Shūrā (Consultative Council). In the video they also announced their own Emir and they chose Ḥusayn as their Emir of Nokhchicho (Chechnya). They also assert that the Mujāhidīn in Chechnya support their decision. Interestingly, they say they are still part of the Caucasus Emirate, but do not recognize Umarov as the Emir.
This video continues the saga over the leadership in the Caucasus Emirate, which started at the end of July. For more on this see: here, here, here, here, here, here, and here. It does not look like this controversy will end just yet.