Sponsors will almost always be far less willing to "wait and see" than clubs - the relationship between them and a player is based entirely on the positive value the player has, and the last thing most want to be seen to do is support someone who is found guilty.
For every SKD type case (which gets raised a lot on here) there are cases where players have continued to play on an innocent until proven guilty basis, and then been found guilty. I keep raising the Adam Johnson - Sunderland case because its the opposite of SKD - he was charged with very serious offences and allowed to play on, only to be found guilty. The negative PR for Sunderland of allowing him to play was enormous.
In the end the NRL has to decide which is more damaging to the game - players stood down and then found innocent, or players allowed to play and then found guilty? If you have a set rule, no matter what your policy is you're going to have one or the other.
Previously I would definitely have erred on the side of letting players play and have their day in court. But the issue now isn't about trying to get it right for every individual player but what is in the interests of the game as a whole, and I'm tending the other way, particularly if it may have the effect of persuading some players to not even put themselves in these situations in the first place.