Henderson was in the middle of a melee at the final whistle as both benches emptied on a frustrating night.
Afterwards, the veteran told TNT Sports: "I thought it was a good game. Maybe both will be disappointed they didn't win the game. Overall we felt comfortable but they had decent chances, they hit the post and had a goal disallowed. I still felt we had our moments. So maybe a draw was a fair result in the end."
Henderson appeared frustrated when he was substituted in the 62nd minute.
"Did I? That's normal," Henderson replied.
"We've learnt from mistakes in the first half of the season. We're in a pretty good place at the moment. We just need to keep improving.
"For us it's about staying humble and doing all the things we've done this season which is working hard for each other. But also just playing with the confidence and freedom to try and win games."