I also say with regard to Aradin, what was his plan long term? Once he and his team reached the grove, if they had been let in, no way would the goblins not have noticed the entrance. They did waste some time talking but there's no way they could have hidden the place with the goblins hot in Aradin's heels as they were. If Zevlor had let them I righ away instead of hesitating (and till ultimately trying to let them in, resulting in the death of one of his people) then the goblins likely would have just turned and reported back, with no one to pick a fight against as everyone was safely behind the wall. Then they have to deal with the cult forces coming back in full strength. So now Aradin either has an uglier fight to look forward to, or more likely given how we see him react in the actual game, he packs up and leaves the grove to fend for itself after bringing effectively certain doom down upon them.
