Can ex-condo owner be on board of directors?

Board member that currently holds the treasurer position has sold his unit. He is currently still on the board. I find this to be a huge conflict of interest. Is there some sort of WA state statute that prohibits this? All I can find in the bylaws is that it states a "Majority of the board members must be unit owners" I interpreted this as most must be owners but if a renter wanted to be on the board that they could.  Bainbridge Island, Washington