Ashmore was at full stretch to keep out Tom Crawford’s strike and stop Hartlepool from going ahead early on, while at the other end the hosts had a goal disallowed for offside from Erico Sousa’s free-kick.
Emmanuel Dieseruvwe forced Ashmore into another save on the half-hour mark while Ndlovu came close to giving Wood the lead as his turn and shot whistled past a post just before half-time.
Ashmore produced another spectacular save from Josh Umerah’s thunderbolt from distance before Ndlovu broke the deadlock with 12 minutes remaining after turning his defender, racing through on goal and calmly slotting past Hartlepool goalkeeper Pete Jameson.
But the Wood still needed another vital intervention from Ashmore to preserve their first win since September 16 as he denied Dieseruvwe from close range at his front post deep into added-on time.
The Deadpool star and fellow actor Rob McElhenney surprised everyone when they bought the Welsh club in November 2020.
And the co-owners were in attendance at the Racecourse Ground – along with another Hollywood star guest in Paul Rudd – to see Wrexham beat Boreham Wood 3-1 on Saturday to clinch the National League title.
Reynolds and McElhenney were emotional after the game as they celebrated with the players and manager Phil Parkinson, with Wrexham moving to 110 points – a National League record – meaning Notts County (106) could no longer catch them with one game remaining of what had been a pulsating title race.
"I am not sure I can process what happened tonight. I am still little speechless," Reynolds told BT Sport.
"[People ask] 'Why Wrexham?'. This is why Wrexham. This happening, right now, is why.
"Boreham Wood showed up today. They are an incredible team. They have one of the best defences in the entire league.
"This entire story, the reason we are all on edge of our seats is because Notts County are so damn good. They deserve to go up. We are rooting for Notts County. We want to see them go up [in the playoffs]."
Wrexham sealed their place in League Two for next season after recovering from going a goal down to Lee Ndlovu's first-minute lob, with Elliot Lee equalising in the 15th minute before two well-taken goals from top scorer Paul Mullin in the second half secured the famous win.
Fans poured onto the pitch on the full-time whistle as celebrations centred around being presented with the National League trophy.
"Well I think we can hear what it feels to the town. It's a time of celebration and be welcomed into their community and be welcomed to this, it is the honour of my life," McElhenney said.
The 'It's Always Sunny in Philadelphia' star also had rather high words of praise for striker Mullin, who now has 38 league goals this season.
"I would like to say Paul Mullin is one of the greatest footballers in the world," McElhenney insisted.
