Whilst it was a monumental F-up, I can't see how there's any grounds for a legal challenge. How is that any different to a referee getting a call wrong in the first minute, or the 79th minute in any other game? News flash - it isn't. That's been sport as long as we've known it.
There's significantly more grounds than any normal error - a) it literally decided the outcome (this is important to establish, but the minor part of the argument), b) they failed to follow their own rule structure/process with regard to when a challenge can be made.
Essentially the Tigers wouldn't be appealing the error of the bunker's ruling itself, but the process error that allowed the bunker to get involved in the first place. It's a fine distinction, but it's a significant one.
Still.. this is just sabre rattling. They're not in the finals race, this season doesn't matter. I do hope they throw everything they can at the NRL though. Publicly. The NRL have defended the bunker's bullshit (and incredibly poor officiating standards) faaar too much, and for too long.
