The 551 travelling supporters sung 'let's pretend we've had a shot' during a forgettable second half which saw them fail to score for the second successive away game.
"It's a little bit disrespectful at times but they've been brilliant all season and I'm not going to criticise the fans," he told the Swindon Advertiser.
"I feel frustrated when we don't give them what they want.
"We're trying to play football a different way because of the players we've got and sometimes it takes longer to get the ball near the opposition goal than it normally would.
"I've not got a problem with (their gripes) but I'll make no excuses because of the number of times we've been on the road and been beaten badly by squeezing too high up the pitch."