Yeah I think they should be allowed compensation.
Think of it this way. Say a player is stood down, then found not guilty. Ultimately, the NRL have made that team play a man down while still paying his salary based on an allegation alone. It's not fair.
Like it or not, we live in a society that is innocent until proven guilty.
I can understand the stand down based on not having the game in the papers every time the player steps onto the field, but a club should not be made to pay full whack on a player if he is not allowed on the field despite being free to walk the streets.