The 28-year-old had four seasons in the Championship with the Seagulls and Fulham before spells in League One with Bury and League Two at Cheltenham Town.
The Woking manager led a Cards team, including first teamers Josh Casey and Tommy Block, of wing-walkers in aid of Woking & Sam Beare Hospices Charity.
Wealdstone completed their first victory since the beginning of April after turning around a 2-1 deficit – thanks to a second half brace from Ryan Gondoh.
The National League club announced the long-term agreement for the sponsorship of their 2,000-seater Leslie Gosden Stand from Andy Lonsdale, the owner of Demoway and Demoscapes.
An early Adam Rooney goal was cancelled out by Nathan Collier and it needed Kyle Hudlin to come off the substitute’s bench and bag the winner with seven minutes remaining.
Andrew Dallas was the Terras’ hero, cancelling out efforts from Woking pair Charlie Cooper and Sam Ashford before late strikes from Jake McCarthy and Sean Shields sealed an impressive victory.
Fresh from their 6-0 thumping at Wealdstone at Tuesaday night, United were in cruise control in the first half after Orsi controlled and fired home Dan Sparkes’ left-wing cross in the 17th minute.
Three second-half goals, including two deep into stoppage time, ensured the Welsh outfit maintained their play-off prospects against a Woking side decimated by injuries.
The Cards currently sit in nineteenth place in the National League table and have confirmed that Dowson is “looking to build a full-time side for next season”.