Four minutes decided this Boxing Day contest at Pilot Field.
First Oaks were reduced to 10 men when Jack Miles was sent off for a touchline challenge on home striker Jordy Mongoy, then home substitute Sam Crutwell rifled home the winner.
Introduced only six minutes earlier Crutwell won the sponsors MOM award - an indication as to what had gone before.
Miles’ dismissal looked harsh - maybe a yellow card, but referee Simon Finnegan deemed it worthy of more serious punishment, leaving the young defender facing a three-match-ban.
Sam Crabb replaced Fraser Walker at right back sidelined with a foot injury, while Sid Sollis started for the first time, since arriving on loan from Margate.
Oaks survived a shaky start with long-throw specialist Ollie Black proving a big threat.
They settled down, Kenny Pogue headed a half chance wide, fellow ex-Hastings man Frankie Sawyer was flagged offside when one-on-one against Horlock.
Oaks’ best chance came 12 minutes before half-time, as the ball fell close to Ainsley Everett and Pogue who was denied by Horlock’s legs.
Everett then caused Horlock more problems, soon afterwards dropping his looping shot, but grabbing the ball as it bounced close to his line.
Mongoy missed a great opportunity to break the deadlock a minute before half-time, but his close-range flick lacked power and failed to beat Ben Bridle-Card.
Micky Collins made an early change after the break, sending on William Johnson-Cole to replace Sollis, before things turned against Oaks with 22 minutes remaining.
Miles and Mongoy tangled close to the halfway line, leaving the Hastings man on the ground off the pitch, sparking a reaction from the home players.
Mr Finnegan waved them away before producing a red card, forcing a defensive reshuffle.
Oaks were still re-organising when Crutwell struck after 71 minutes, running from midfield to score with a left foot strike inside the far post.
Mongoy hit the bar three minutes later, before Josh Dorling fired over late on.