After Trevor Sinclair's stunning strike secured the three points at the Stadium of Light, the Hammers boss admitted the goal provided a moment of inspiration on an afternoon that was far from pretty - but certainly satisfying.
"It was a very profesional performance - the ultimate away result is a 1-0 victory," says Glenn. "You'd like to get two or three goals, but that doesn't happen very often, and to keep a clean sheet and get one at the other end is all you hope for. You have to look at it as a job well done
"I thought at times we had to dig in and battle hard, which
people at times have accused us of not doing away from home. They
couldn't accuse us of that today.
We had two solid banks of four and the two strikers got back to
help out and defend as often as they could. You have to do that
away from home.
"People will point to Niall Quinn hitting the post and say we were lucky, but I don't feel we've had any luck this season and we didn't have too much last season. They say these things even themselves out, so hopefully we are starting to get our share now. It would have been tragic if we hadn't taken all three points."
While the victory owed more to the Hammers' determination and resilience than any free-flowing attacking football, Glenn was certainly looking forward to watching a repeat of the match-winning strike from his England midfielder.
"It was a terrific strike by Trevor, he absolutely murdered the ball and the keeper had no chance. But we mustn't forget the quality of the pass from Paolo Di Canio, either. The ball is on one side, and suddenly he switches it across the pitch, over the head of Michael Gray, into a space where he knows Trevor will be running.
"It was a fantastic move, and of course a nice way for Trevor to celebrate the birth of his baby son in the week. He took a whack on the head in the second half after going in for a typically brave aerial challenge, so we took him off as a precaution, but there is no sign of concussion and he was feeling a lot better after the game."
While the news for Trevor may have been encouraging, that sadly wasn't the case for Ian Pearce, who sustained a shoulder injury on the stroke of half-time that eventually forced him to bring his return to first team action to a premature end.
"I feel really upset for Ian Pearce," frowns Glenn. "He has been so unlucky with injuries and he deserves to have an injury-free run. We're not sure how serious the shoulder problem is yet, but he was in quite a bit of pain. He tried to play through it in the second half, but he took another knock on it and it became too much for him.
"He had done a magnificent job alongside Tomas Repka up until then. He was safe, took no chances, and he was what I wanted him to be - a solid defender."
Now the Hammers boss will be hoping that his side can be just as solid against their west London rivals on Wednesday night in a game that is being played at QPR's Loftus Road ground - the Cottagers' temporary home while Craven Cottage is renovated.
"It's amazing that we've won a couple of times on our travels this season but have yet to win at Upton Park," says Glenn. "Before we can even think about home games, though, we've got to concentrate solely on another very tough away game against Fulham.
"They had a good result against Manchester United at the weekend, it took an excellent goal from Solskjaer to rescue a point, and Fulham could even won it had they not missed the penalty late on.
"They are having a great season, but we are going to go over there and have a right go at them, hopefully with a winning performance that would make it a very pleasing six points in four days."