Nope, it's a four man league with a max of seven on the roster. In December, they had 6 on their roster. Sub A "got shot" and so they added another sub to get to the max of 7. Last night, they removed Sub A from the sheet entirely (despite the fact that he's bowled every week since mid-December in another league, and bowled 6 games in this league) and brought in Sub B, who wasn't previously on the sheet or listed as one of the 7 roster bowlers.
This can't be legal