I was watching it all as a ghost and this is what I saw:
Only 4-5 RUHO people (I didnt count, but no more than that) took the harrower from them - however they also used an Orc Brute. They got lucky as the defenders pushed against them instead and got themselves trapped by an efield.
The defenders were mostly blue PvM characters - they didnt actually have many of their main PvP'ers. I only counted 2 reds and one blue that I recognised as having faught against before.
A couple more RUHO came later on to help defend and kill the harrower, although RUHO certainly didnt have more than 7 max the entire night. I'd guess they had 6, although again I never counted.
I did see most of RUHO run out the front when it was completed, although I also saw one run down the back too... for what reason... nobody knows. Maybe he was tired and needed to log out
Oh and RUHO left the gold which I and 2 other people collected