I have wondered myself as to why he was removed but honestly, I am a little sorry to see him go. His harshness was proof positive to me what the GB really are. So back to why he was kicked off the GB - it has to be something pretty bad or the secret would have slipped out by now.
Here are a few theories I came up with after talking to David Splane a couple of beers:
1. He was Grand Master of a coven of Pedos and the truth got out. (Not likely)
2. He was smoking so much weed watching 'Apocalypse Now' that the Housekeeper got high when she entered the room to clean and turned him in when he wouldn't share. (Annnnhh - probably not)
3. He was so inebriated after watching 'The Bachelor' that he walked down to the lobby in his birthday suit to pick up a delivered pizza. (a stretch since he probably has someone else pick up the pizzas when they get delivered)
4. His laptop was hacked by the IT guy supporting the GB when the hard drive got so full of porn that it would no longer save anymore (possible but most hard drives will compact data before they refuse to save)
5. His name came up in the PA investigation related to obstruction of justice so he was served at the front desk and the judge considered it sufficient for contact due to his position and the efficiency of the Bethel system to deliver messages. (Oh come on! It's just an outlandish theory all you apologist!! Lighten up!)