Wanderers coach Tony Popovic was critical of referee Kris Griffiths-Jones' performance.
"I thought that overall the referee had a poor game and it would have been an injustice in the end if we didn't get the points because of some poor decisions," Popovic said.
"It would have been a shame if the players didn't come away with the win.
"We felt that up until the sending off we totally dominated and probably should have been two up, but the send off obviously changes things slightly.
"After that it was all about character, discipline and real team unity."
Ferguson was disappointed the Glory couldn't capitalise on having an extra man in the second half.
"We never had the cutting edge today and we are very disappointed with the result. We had the bulk of play and they made it difficult for us. We had our chances, but just didn't take them," Ferguson said.
"We kept the ball well but we struggled to find that little bit of cutting edge or X-factor that could split the defence open.
"Credit to them for coming here and getting the early goal, and then doggishly defending after getting a man sent off."
Will Burnley retain their EPL status?