Blakberry your post quoted "The fact is that a double play could not have been performed before the runner from 3b crosses home and the batter touches 1b on a clean single." You also said, "doesn't sound feasible, but i guess it could happen" Both could happen and has happened as I was LCF that started double play in my post.
just wanted to emphasize to you and any others that might not have grasped the situation, force play as a third out negates any run scoring even if bases loaded with two outs, all three runners cross home plate and for some unforeseen reason the batter is thrown out at first base, none of the three preceding runners are scored as runs.
Also, there is always a play somewhere, may or may not be in time. So the UIC who started the thread did so for everyone's benefit to see how the umpire, who exhibited extremely poor judgment, should be counselled, he acknowledges fully that defense has the "raw aaaaas" because they lost and wanted to complain but purpose was to get anyone's input into how to "salvage this umpire" possibly? and to show players and umpires that both proper mechanics, judgement, and timing of making the calls are all integral to the success of the game.
Even though an umpire is to perform as an almost invisible factor on the field, they are integral to the overall success of every game that is played.