I'm with Wiggy,
Never 'committed' to anything until the donks have been switched off on stand. The options are always open until they're not. Obviously everyone else has a far better knowledge of the SOP's, fuel planning and diversion criteria than I do.
At no point on the forecasts did the met ever go below that required to conduct a successful approach. The met bone chuckers screwed it up. Local effects added to the woes and other airlines got bitten as well. Welcome to EZE. Without Montevideo it is effectively an 'island' destination without the ability to carry 'Island' fuel.