Nathan Jones described Kayne Ramsay’s dismissal as “a moment of madness” and felt it cost his Charlton side a first victory over Millwall in more than 29 years.
The Addicks have experienced plenty of heartbreak since their last success over their south London rivals in 1996.
And there was a fresh instalment of misery this afternoon with Millwall nabbing a leveller after the hosts went down to 10 men in the 78th minute – Ramsay was dismissed for two bookable offences.
Millwall substitute Ra’ees Bangura-Williams pounced in the 88th minute after Charlton goalkeeper Thomas Kaminski initially denied Luke Cundle.
Sonny Carey’s 40th-minute strike, his first goal for the Addicks since a free transfer move from Blackpool in the summer, had put the hosts ahead in front of a bumper crowd of 23,293.
Charlton looked to be controlling proceedings until Ramsay got his marching orders.
Addicks manager Jones said: “I’m proud of the performance because it took a red card for us to draw the game. We were comfortable and I didn’t see us conceding today.
“Once we got the goal I just wanted to get the next one, which we couldn’t do. It was going to take something – like a set-play or a moment of madness to concede and we got a moment of madness.
“When you are on a booking and you lunge in then you know you are risking something. You have to be cleverer than that. Top defenders stay on their feet and make people work for something – when they go to ground it is a last resort or they know they can win it.
“It is a learning curve for him. He’s a young boy and he has so much ability, he has been outstanding for us. That was categorically the turning point.
“We got in so many times in the first half but without having an end product. If we do that we’re comfortably ahead by half-time. We didn’t show moments of quality which we need to.
“We got the goal eventually. I tried to make positive changes to get the second goal. They needed something to turn for them and we gifted them that.
“We should have had six points from our last two home games but we took one. We’re comfortable at the level.”
Millwall manager Alex Neil admitted that he felt a sense of “relief” at his side salvaging both a point and also their lengthy undefeated record against Charlton.
His introduction of Bangura-Williams, as well as shifting formation in the 66th minute to add another midfielder in place of Mihailo Ivanovic, paid off.
Neil said: “Half-time was probably the angriest I’ve been since I’ve been here – because we were c**p in the first half. It was the basics we were short on.
“The turning point in our favour, the sending off helped, but was when we went an extra man in the middle and took a striker off. We got a foothold in the game.
“It’s a constant dilemma I’ve had to fight against. Last season playing a front two paid huge dividends for us. But having another midfielder out there made us look more dangerous.
“We deserved our goal. We know we can play better. If you’re not playing at your best then the one thing is to make sure you don’t lose.
“There is still a bit of frustration for me because we should’ve played better in the first half.”
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.