Those webisodes aren't recent. The earliest one seems to take place around the beginning of the recording process, back in February of 2014, shortly after Dan, Mike and David met and decided to start writing material together. Around that time John was playing in Adrenaline Mob and that supergroup called The Foundry with Blaze Bayley and A. J. Pero (R.I.P).
Also during 2014, he had to record that debut album with Art of Anarchy, and he was also asked to record bass on Geoff Tate's debut album, The Key as a part of the Operation: Mindcrime line-up.
He had the most projects of anyone. It'd be asking a lot to just drop them all.