Legally you may be right, but it's still dishonest to enter into an agreement with the intention of immediately breaking it. It might come back to bite him, too. If any of those landlords report him to a monitoring service, he'll have a hard time renting anything ever again. As well he should.

But if you really think it's OK, let's make that face-punching deal. Just don't be too surprised when I show up wearing spiked brass knuckles - you didn't say anything about that in the contract, so it's OK, right?