I believe Justin now controls a majority stake, and so the answer is a yes.

If Justin wants 30 new witnesses, 'ours' will likely want to fork - is that a decision that has their best interests at heart, the communities, or both?

At least the AMA gave some comfort that he won’t vote for witnesses with the majority stake.

The potential is certainly there. I am sure that they won't, but that is not the point. if it is possible, it is not decentralised by definition

At least following the AMA there is a commitment to not use the power for voting content or for witnesses. Feeling +ve for the new investment.