The argument isn't valid because he initially signed a short contract and planned to be back for round 13 anyway so he didn't just sign because of the NRLs delay he was trying to be clever. Also he has since said he went to rugby because he needs to pay his bills which again makes that argument invalid.
You must be some kind of special to not see what has gone down here.
The Rugby Union option came up weeks after he had signed a 1 year deal with the Sharks. Due to the fact that he was not getting paid by the Sharks as he had no contract. Not to mention the bloke is a moron and to be broke after years of earning decent wages is mesmerizing but not surprising with pro athletes.
The NRL and the Sharks both made it difficult on him because his contract was not registered and the Sharks aren't able to pay him while he had no contract, which was why allowances to front load pay him were sought by the Sharks with the NRL.
The stipulations by the NRL on him being banned from training in an official capacity with the team probably also inflamed the situation. You can question if you like whether or not that is in the players best welfare interests (but i couldn't give a shit about that PC crap).
His management the Orr brothers are some kind of stupid and special that is granted, but there is no way in high hell they would have legitimately believed that the NRL would register his contract and allow him to serve his ban while playing in an overseas competitor sport. These actions are all calculated for a purpose.
The Orr brothers offload Barba to French Rugby and pocket a nice commission while ensuring that they can also get maximum $$$ for Holmes out of Cronulla and ensure they get another nice commission as they manage both players.