The 22-year-old England fly-half played 40 minutes in the A League match in Henley, which Wasps lost 27-13.
His club career started at Wasps, and he went on to play for Bedford, Gloucester, Worcester and Harlequins.
Tom Varndell got Wasps' final try, the Dragons ending the game on the attack.
Simon Shaw was the unlikely catalyst for a Wasps attack from their own 22.
Varndell notched the third Wasps try after a good period of pressure, Walder's conversion again wayward.
David Strettle's embarrassing mistake handed Wasps' Joe Simpson a late Christmas gift after just five minutes.
He spent two seasons at Bristol before moving to Wasps in the summer of 1998.
"Olly has stepped in there and taken his chance very well, " said the Wasps veteran.
Wasps' defence ensured they maintained their record of never losing to Saracens at Adams Park.
I'd like to publicly thank the Wasps directors for the public support they've given me.
There, they harvest millions of wasps and tons of fungal spores to combat larvae and spittlebugs.
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Wasps are in much better shape and can call on an almost complete first choice selection.
Wasps director of rugby Ian McGeechan said Leicester were worthy winners of a high-quality encounter.
Holden, 36, coached in New Zealand and Japan before joining Wasps in the summer of 2005.
He had no argument with its work on bees, wasps, and ants, he said.
All three have failed to recover from the injuries picked up in the win at Wasps.
Clermont Auvergne's bonus-point victory over the Scarlets relegated Wasps to third place in the group.
"Wasps is an amazing club and bigger than any player, " he told BBC Sport.
Bath face Wasps at Twickenham on Saturday before a final-day game at home to Leeds.
Dave Walder's boot pulled Wasps level at 30-30 with nine minutes remaining before Haughton's sensational winner.
Flutey left London Irish in 2007 to join Wasps, before moving on to Brive in 2009.
Wasps scored through Paul Sackey, with Dave Walder converting, to make it 8-7 seconds before half-time.
Meanwhile, Saracens have strengthened their backline for next season by signing Edd Thrower from Wasps.
Sunday will see Leeds celebrate their 500th competitive game as their host London Wasps at Headingley.
WASPs have also learned to diversify their risks by supporting both sides of the political aisle.
Wycombe Wanderers, Wasps Rugby and Wycombe District Council have agreed to collaborate on the project.
Wasps' Eoin Reddan scored the first try but they also had two players binned.
Paul's conversion put Wasps in deep trouble at 13-0, although Alex King immediately slotted a penalty.
WASPs who ruled Los Angeles from swanky downtown clubs in the first half of the century.
The 23-year-old winger joined Wasps from Super League champions Leeds Rhinos after the end of the rugby league season.
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