Leyton Orient boss Russell Slade was left wondering why his side did not go for the jugular after they were pegged back late on as Stephen Dobbie's strike earned Fleetwood a 1-1 draw.
The former Blackpool striker lashed home his first Fleetwood goal to preserve the club's unbeaten record since promotion through the play-offs.
Fleetwood bossed the opening stages, testing Adam Legzdins in the Orient goal on three occasions.
Experienced wide man Jobie McAnuff played an important role in the turnaround and would soon be the provider for the first goal scored against Fleetwood in open play since May 3.
The woodwork had already been rattled by Henderson when he was left totally unmarked at the back post. Goalkeeper Chris Maxwell got down low to the ball but was unable to prevent it creaping under his body.
Slade said: "It's a difficult one to call because they bossed it at first and created a couple of opportunities.
"It took us a long time to settle down, but when we did settle we seemed to get on top a little more.
"We've hit the woodwork, created a few openings where we might have nicked one.
"We've put in a solid away performance, got the goal from a set-play.
"That sets us up nicely and then we've conceded.
"It's frustrating, it's disappointing and it's uncharacteristic of us given the way we defend.
"We've been more resolute than that.
"He's gone through a couple of tackles and we should have stopped the goal.
"But we should have broken their heart by getting a second goal."
Fleetwood assistant manager Chris Lucketti was happy to take a point and insisted it was merited.
He said: "We're delighted with the point because I thought we thoroughly deserved it and were good value for it.
"I thought we started off fantastically well and had a couple of chances which we should have taken.
"We knew they were a danger from set-pieces and Henderson caused problems up front, so their goal did knock us back for about 20 minutes.
"In the second half we were still suffering a bit from that goal, but to be fair to the boys they rallied and ended the game well.
"They are a quality side with some quality players, who were a whisker away from being in the Championship, and they'll be up there again come the end of this season.
"It was a great finish from Dobbie and it was great to see him back on the pitch.
"We've missed him the past few weeks and he'll be a great asset to us this season.
"He showed everyone the quality he has got with the finish he produced."