I don't believe Jan has any intention to run any race this year. It's just a way that lets him talk about himself for a few months. When the Master's Championships is over, he will find something new to talk about that takes place in the distant future.
He is highly ego-orientated and bases his self-worth entirely on how he compares to others rather than on becoming a better version of himself. He is too mentally weak to show up and race without being able to look good in front of others.
In a few months, he will have some "injury" or something and act like he's upset he will not be able to compete. If he somehow makes it to the starting line, he will not finish and blame some injury to try and protect his ego. I'll be sure to quote this post later this summer when it's proven to be correct.