Exactly. Half of everything written is untrue. And everything an agreement. Of course he did nothing wrong. He simply made them an offer and they complied.
Discussion
I remember story of one guy who edited the template of standard contract with bank and nobody on bank`s side noticed, so they signed it.
Then he demanded bank to fulfill the condition (And I think it was not something totally outraging, just like basic services for free and no chance to end contract from the bank side :D)
Bank get to court, but lost it :DDD