The case of mistaken identity at TWIC has been solved!
I received an e-mail from The Week in Chess explaining how the error occurred. Although each player is supposed to have a unique identifier, the software program at TWIC tends to select the weaker player whenever there are two persons with the same first initial and last name. Since Jonathan West's FIDE rating  was lower than mine , it chose him instead of me.
The corrected crosstable appears in issue 775.