and i think you are underestimating the thought process of LAGs. they do this all the time. if no one bets, they fire. sure, sometimes its larger (when they are confident), and sometimes its a minbet (when they feel they MAY be best, and want to find out...but arent necessarily going anywhere, either).
The point Im making is that min-betting is not an aggressive play, its actually a very passive one. And if a LAG makes this play it is very out of their character.
People who min-bet are generally weak and passive, therefore I tend to raise these players and it is very proffitable.