Thanks for the latitude. I'll make this as simple for you as I can. McCain has always been a proponent of regular order. In his speech, he asked that regular order be followed for this bill. He then voted to continue a process that does not follow regular order.

If that isn't sufficiently clear from the excerpt cited above, try this passage from his speech:

“Let’s trust each other. Let’s return to regular order. We’ve been spinning our wheels on too many important issues because we keep trying to find a way to win without help from across the aisle. That’s an approach that’s been employed by both sides, mandating legislation from the top down, without any support from the other side, with all the parliamentary maneuvers that requires."

Or this:

“Why don’t we try the old way of legislating in the Senate, the way our rules and customs encourage us to act. If this process ends in failure, which seem likely, then let’s return to regular order."