Thanks Chateau for all the information. I think you have summarized the flow of the next leg very clearly. It's nice to see all the pictures as it brought back all my memories in Denmark 4 years ago, pity I did not have chance to go up Vor Frelsers Kirke last time as it was closed for renovation...
As for the W turn, it seems that Ernie/Cindy are in leading position at that time, so any team being u-turned by them would not be greatly affected since that team could u-turn any other team behind as well.
However, given that the detour are not physically challenging (at least the bunny one), I don't think it would cause huge delay for the u-turned teams, maybe just 10-20 minutes. Don't forget that this leg involves driving (there is no driving involved in any leg this season yet, right?), teams can lose time easily if they can't navigate themselves...