Back home after a long drive, taken a nap, so hope I have the energy to finish this Gauntlet
As far as the end of game bug, it seems somewhat random, but a few things seem to increase the chance of it happening.
Forcing end of turns
Conquests
Since one of the main points of the HOF and Gauntlet is to maximize your score, I don't see not doing any city takeovers or settling as an option. I will compromise a bit by not finishing off any civ and being careful not to force the end of the last turn. I'll see if I can calculate the points I gave up.
In my opinion, anyone who has a last turn save (or end of the 2 turns to go save) that shows that no other victory has been accomplished, should get their game accepted into this gauntlet, as IMHO, it is obviously a bug that is causing the unusual victories. If you have gotten to the last turn, then you have a TIME victory, by definition!! At that time, you have passed all the TIME victory tests that you have any control over, avoiding the Domination and the Cultural Victories and preventing any AI win. (I am assuming the player has the highest score). The game is essentially over, the TIME victory is assured, and the play should focus only on maximinzing their score.
If the bug hits me, I will replay the last turn, until I get a TIME victory, submit it, and fight like hell to get it accepted along with all others who have been bitten by this bug. If I avoid the bug, well good for me, but I will continue to support anyone else bitten by the bug, to get their game accepted.
I think the next step in squashing this bug is to play a quick Settler Duel game to the last turn without the HOF mod and see if the bug still occurs. If no one else does this, I'll give it a try after I finish the Gauntlet. I also need to play more with my last turn save I posted a while back and with IglooDude's save. I will do what I can to track down the bug and will be glad to help any staff member, or any other player, doing the same.