That article makes one mistake: the sitting Vice President can not vote when the Senate must elect the Vice President. The 12th Amendment says when the Senate must elect the VP it does so by one of the two top vote-getters for that office receiving the votes of “a majority of the whole number” of Senators. The Vice President is not a Senator. At least 51 Senators must agree on who would be the Vice President.
One other point that some might be missing. The votes from the Electoral College goes to Congress for verification. One Representative and One Senator from a state may protest the vote(s) from that state. If protested, it must be resolved by Congress before the votes can be tallied and finalized. So even if say 3 won state’s electors change their pledged votes and vote against Trump, they can be protested which I would think can be reversed to be for Trump.