Apparently.
The international laws of the game will be changed to include a ban on shoulder charges. Now, not all competitions play to the EXACT letter of the international laws. In fact the NRL is a prime example. But when it comes to a matter of infringement I'm not sure there is any scope for any competition to ignore the ban. Some competitions play under different rules, like interchange rules, but to have different rules on foul play is not likely to happen.
The ridiculous thing about this situation (sorry, not THE ridiculous thing, but ANOTHER ridiculous thing) is that the main reasoning behind other leagues falling into line and playing by the ARLC rules is because their precedent has actually created a legal threat. It would be easier for legal action to be successful against a league that didn't ban the shoulder charge BECAUSE the ARLC banned it from the NRL. So the imaginary legal threat these morons dreamed up to justify this decision has actualy created a legal footing that did not exist, and forced governing bodies to follow suit against their will. It's diabolical in its stupidity.