"People are anticipating the Bentley thing so much, but what really happens next week is telling the guys. She gets to this happy place and is almost a little arrogant and cocky because of it, but I don't think she thought through the effect it was going to have on the guys," the host toldTV Guide on Tuesday.
"It's like you walking up to your boyfriend and saying, 'For the last couple of months, I've been sleeping with another guy, but the good news is I don't want to have sex with him anymore.' She didn't really understand it until our deliberation, and all of a sudden, things start to unravel in the cocktail party in Hong Kong."
Harrison said the show had no choice but to bring Williams -- the two-faced bachelor who feigned affection for Hebert when they were together but repeatedly bashed her in private before eventually deciding to leave the show and break her heart -- back to give Hebert the closure she needed, because without it, The Bachelorette process would have failed and Hebert would've ended up alone.
"We got to a point in Chiang Mai where I was sitting there telling her this isn't going to work, what you're doing is a disaster, you're not going to find love and these guys are going to hate you. She said, 'I need to do something,' and I said, 'I will make this happen,'" Harrison explained.
"I don't know how, but we were able to figure out how to get him to Hong Kong... But I was like, 'These are good guys, a million people are going to be watching the show, screaming at you, saying are you out of your mind wasting this opportunity.' I think she needed tough love at that point."