The Red Devils were thrashed 52-6 by a Saints team who made it look very easy, and Harris identified problems with his team’s attitude.
“I sensed very quickly that the attitude was not right,” he said.
“There was a complete lack of composure in everything we did, particularly defensively.
“I had people jumping in, turning in, turning out all over the place, it was just not what we do.
“We’ve got to fix it up. The attitude was all wrong and it’s something we need to get to the bottom of very quickly because it’s an important season.
“We threw three or four passes just aimlessly, you need to have patience and build pressure, we tried to come up with some big plays and you have to earn the right to do that.”
Kiwi full-back Kevin Locke turned out for Salford after being decalred fit on the afternoon before the game. He limped out of the action prematurely, however, much to the disappointment of the club’s fans.
The coach also confirmed that other key players had picked up injuries.
“He confirmed himself 100 per cent fit yesterday but 15 minutes into the game he’s a passenger,” Harris said.
“It’s a groin issue but if someone declares themselves 100 per cent fit, you’ve got to go with their judgement. Unfortunately it’s not worked out for us.
“We lost three or four bodies and they were all backs but it’s not an excuse, we could have had anybody out there today, it didn’t work for us.”