I think the RFL could still punish him, in the same way as if he said anything in a tv interview.

Its not worthy of any punishment, just a quiet word from someone at the club telling him to be careful of what he posts in public.

The precedent though is for the club to deal with it i.e. Cockayne, not the RFL.

WTW has a code of conduct for players that sits alongside their contract of employment; it contains guidelines about use of social media.

A quick delve into the Twitter feed of RL players throws up some singularly unsavoury stuff; for example

Some of these idiots need to be protected from themselves, and that's before one considers the damage to the reputation of the clubs they are associated with.

The problem is that most rugby players and football players for that matter are as thick as two short planks and would either be in jail or on the dole if they weren't sportsmen.

No doubt some would, but to dismiss the majority as thick and useless is a bit silly and unfair.

Ok. There are a large number.

Back on the OP what would be happening if he said that about one of the current full time muppets, I mean officials after a match in which he appeared?

He'd be fined as there's something about that in the operational rules I believe