Meeting with the press after his side had rounded out the campaign with a three-nil defeat, Flynn admitted he was disappointed to with his side's display, particularly during a poor first-half.
Conceding a goal with just three-minutes on the clock, Harry McKirdy putting Swindon into the lead, the Good Ship Saddlers took on more water before the break as Jack Payne bagged a brace, including one from the penalty spot.
Flynn, who has already started his search for new recruits, went on to admit that his side simply handed their opponents the advantage, as they failed to make enough of their few goal-scoring opportunities.
Speaking to the assembled media, Michael said; "It was a terrible first half. We did everything we told them not to do.
"We gave them the lead after three minutes, and that just made the whole day even tougher.
"It got their confidence up and their fans going, and all three goals were preventable from us.
"From Swindon's perspective, they're good goals, but from ours, they're terrible. We were wide open.
"We got sucked in and left runners. It was a calamitous first 45 minutes. In the second half, we huffed and puffed.
"We actually had more shots than Swindon, but we just don't take our chances. That's something I'll be working on.
"We should have scored a goal in the second half, to make it interesting at least. Our supporters deserved us to make a game out of it as they were absolutely superb."