The tackle left Charlton needing treatment and Morris was booked but the Norwich midfielder believes it should have been a red card.
"Luckily my knee was pointing in the direction he was coming from," Charlton told Norwich's official website. "Because if my foot had been planted it would have broken my leg in three places.
"I was disgusted with it. I thought it was a straight red."
The ill-tempered game saw The Lions finish the match with only ten men after Barry Hayles was sent off for disputing a penalty after Darren Huckerby seemingly dived in the box.
Keeper Andy Marshall saved the spot-kick but Lions manager Colin Lee was left with a selection headache ahead of tonight's clash with Sheffield United with both Hayles and Carl Asaba out.