The article doesn't actually present any evidence that humans+computers can beat computers. The closest thing I spotted was "I accomplished the feat in 38 moves

The article doesn't actually present any evidence that humans+computers can beat computers. The closest thing I spotted was "I accomplished the feat in 38 moves, in a sequence that no computer would consider or find ... I did not subsequently find a win". So the computers disregarded a line that didn't work. The actual evidence he listed suggests this is a war between different humans to work out who has better computer hardware ("the lack of decent equipment is being felt quite notably in Russia, where embargoes have limited access to new hardware and the latest chess tools. As a consequence, the Russian team finished near the bottom of the standings in the last Correspondence Chess Olympiad"). Cool and all, I can imagine people having a lot of fun, but it isn't obvious they are competing based chess skill here. The computers are bringing the chess skill and the human seems to be bringing logistic, financial and clerical support to operate the computer.