I wonder if Muta contacted him for questioning and that's why he's in freakout mode. I wouldn't be surprised if Keffals responded but acted erraticly and retarded, might have even demanded money from him like he did with that other interview guy, then realized he can't delete his metaphorical tweets (dms/voicechat) to Muta and flipped the fuck out. Or some mutual got the word that Muta might be dropping something soon and Keffals is going full control mode over it.
Maybe there's trouble in North Irish paradise with his beloved? The threat of being kicked out or deported is always a hard one. Or maybe he's suffering from drug induced paranoia like someone else suggested, or withdrawl and slight clarity.
Whatever it is, we can only wait.