Remove addon and think about removing saw.
Well, the saw bug will be removed IF some of the players using it decided to reinstall their SAMP without SAMP-Addon. So, the saw will be staying and will stay forever.
If you remove saw, remove sniper too.It's far too op sometimes and ruins running away as a protector when a dozen of civs can just snipe you from their arse, for example.
Sniper and saw is already a part of the GM and the server. You can't just remove both of them just for the sake of a 'bug' and 3 or more Civilians against outnumbered classes.
My thoughts for this is that both sides should be in balance and may have to resort on banning something.
In short, either ban SAMP-Addon and the saw will stay as it is or allow SAMP-Addon and the saw will be removed. If the saw bug cannot be fixed, I think Jonne should ban SAMP-Addon.