why would bungie want to go back to ms?None of it actually points to MS. Just that they might be getting acquired.
The CEO gave a nonspecific denial to the rumors of MS buying them. Nonspecific in this case meaning it could have meant anything. That MS isn't buying them. That they didn't back down from their price.
It could be false, as it could be someone else's price.
In the end it might mean nothing. Or that someone else like Sony is buying them.