Had they heard what he had to say about them in a pre-match TV interview the FA Cup Final might have been a rather different spectacle than it was.
Some 'supporters' would probably have felt like lynching him! Until the final whistle, that is.
To be fair, the professor, as they call him, had a real point in objecting to the vicious vitriol that has come his way this season. And the sterling job he has done at Arsenal for the past 20-odd years didn't really deserve it.
But just listen to this little uncharacteristic outburst that makes you wonder why the dickens he didn't speak out before?
"I believe there's a difference between being criticised and being treated in a way that human beings don't deserve," Wenger told the BBC's Football Focus.
"The lack of respect from some has been a disgrace and I will never accept that. I will never forget it.
Arsene Wenger delivered the perfect response to the 'disrespectful' Arsenal fans
The Wenger Out signs were few and far between at Wembley
"The behaviour of some people during the season, that is what hurts me most. It's not my person that is hurt but the impeccable image of the club around the world. That kind of behaviour does not reflect what Arsenal is.
"A strong club is a club that makes a decision. It is wrong that in modern society it is not a question of whether a decision is right but whether it is popular.
"That has nothing to do with competence. People with responsibility have to make the right decision."
Wow! After a self imposed silence on his future that has stretched back the best part of nine months the Frenchman's vocal critics aren't the only ones wondering where the heck all that came from – and at this particular time.
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Truth to tell Wenger's self centred defiance arguably contributed more than anything to that unrest in the stands and the subsequent on field uncertainty that has denied Arsenal a place in the Champions League next season for the first time in 20 years.
Arsene Wenger lifts FA Cup as Arsenal players celebrate Sat, May 27, 2017
Arsene Wenger was the centre of attention during the wild Arsenal celebrations
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Arsenal celebrate winning the FA Cup against Chelsea
But given his loyal and successful service I'll leave it to you, dear reader, to judge who the guilty parties are here.
Wenger's mood changed, of course, with that controversial Sanchez opener. Whether the Arsenal faithful will follow likewise is open to question.
They, like him, may not be prepared to forgive and forget – even though their seemingly inspired side could easily have been four up within half an hour.
Perhaps Wenger's players knew something we didn't and wanted the gaffer to go out with a rather different bang than the one he delivered on the telly beforehand.
But whatever the reason they played with a swagger and incisiveness that had often been well below the standards that have become their manager's trademark before this this season.
No manager has won the FA Cup more than Arsene Wenger
The question was the same as the one that followed the boss's lunchtime tirade. Where the heck did that come from? And why didn't they play like this at Crystal Palace and West Brom when it really mattered?
At the end of the day, though, it was a rather more dignified Wenger who had the final word yesterday. And what a word it was. What better answer could he have given to those critics?
How final that will ultimately be, though, is due to decided at a defining board meeting on Tuesday.
The expression on the face of Arsenal owner, Stan Kroenke, suggested that the Gaelic growl might well be around for a little longer – no matter how those fans feel.
Wenger's smile was a satisfied one to say the least.
What a place to prove a point, eh?