"Adam Ashley-Cooper is obviously a very well respected member of the team so perhaps all the guys are rallying around him really trying to make it a very special night for him."
Waugh believes the bitter fallout from Beale's in-flight confrontation with Wallabies staffer Di Patston, who has since resigned citing stress, and the subsequent leaking of lewd text messages from the playmaker to teammates about Patston would usually derail any team.
"If it wasn't such a huge occasion, in the fact that it is Swoop's 100th, perhaps the players would have got caught up a bit more with what's going on in the background," he said.
"But these type of special occasions tend to bring players a lot tighter and closer together, so I actually give them a good chance of the upset that probably no one's predicting or expecting."
Waugh has backed Beale over the issue that has rocked and divided key players in Australian rugby.
Beale faces a code of conduct hearing next week which could end his career in Australia.
Waugh says it would be a huge blow to lose Beale.
"All I do know is that Kurtley's obviously made a couple of mistakes there but, in saying that, Kurtley was absolutely outstanding for the Waratahs this year.
"And, if you can get him in the right head space and right team environment and right culture, he can be a leading player in world rugby.
"You saw the Waratahs get the best out of him this year and it's important the Wallabies do the same."
The Waratahs' Super Rugby-winning coach Michael Cheika yesterday distanced himself from talk the ARU had already sounded him out, maintaining he had not been approached.