Bez módů jedině přes konzoli. Viz http://en.uesp.net/wiki/Skyrim:Marriage
Steps to re-marry using console commands:
Select spouse.Enter the following console commands:
removefac 51596
player.removefac C6472
resetquest 74793
resetquest 21382
setstage 74793 10Wait for 24 hours.
Then proceed to marry as normal.