They remain four points from safety but Thorn said after seeing them get a desperately needed point: "Burnley is never an easy place to come and to have come away with a draw and still be in there with two home games to come is great, we've given ourselves a chance.
"We didn't do a lot wrong, their keeper pulled off some fantastic saves and then it was a poor goal to concede, but we came out in the second half and showed character.
"We had to change it to get back in it. There was an element of injury with all three players that came off but we needed to make the ball stick more and Platt gives us that option.
"He is effective off the bench and so it proved. We've picked up quite a few injuries but we had to get back into the game and we had to make three substitutions at once to do that."
Eddie Howe has just about ruled out any hopes of reaching the play offs after this latest disappointing home result. "I would imagine it's pretty much all over now," he said. "We needed to win all our games and we haven't done that, which makes it pretty remote.
"If you look at the games we should have won here, it's a huge frustration and it's the most important thing we need to address next year. We have more points away from home, which is unusual and the balance is trying to keep our away form as good as it is and try to improve here."
He added: "It was a scrappy game and we weren't good enough. We never really had control of the game and didn't play as well as we have in recent weeks.
"We got a great goal against the run of play and I felt that would have given us the platform to kick on, but it didn't really happen and it was only in the last phase of the game, when they were down to 10 men, that we created a number of chances.
"It's a disappointment because recently our performance levels have been good, but I felt there was a little bit of fatigue there today. We looked a little leggy and with a small squad it probably looked a game too far, but we have another game on Tuesday and we have to try to get them to go again."