The Divorced Patriarch

How am I the last to find out that Patriarch Alexei was divorced?

I was reading his obituary in The Daily Telegraph and it says at the very end: “He married, in 1950, Vera Alekseeva, the daughter of a priest from Tallinn, but the marriage was dissolved within a year.” But somehow I missed this in the Wikipedia article about him and various other sources.

He got married on Tuesday, deaconed on Friday, and priested on Sunday, all in the same week.

Now I used to know a man who was an Orthodox priest (though admittedly not a Russian), whose wife ran off with someone else and divorced him and he was defrocked as a result. I understood this to be the more normative response to the divorce of clergy. Yet not only did this not prevent Alexei from continuing as a priest, but it was also not a bar to the episcopate and further elevation within that.

How does this work, exactly?