In a game of few chances Stack was the home side's hero as he tipped Medy Elito's fine strike onto the bar in the 70th minute.
"There were few chances in the game, I felt we were the better team in the second half and we were in the ascendancy certainly," the Daggers caretaker manager said.
"I thought Elito's shot was a fantastic effort and I think the goalkeeper's got a touch to it from where I was standing.
"It's goals like that which change games, and something spectacular probably would have ended up winning it, but it wasn't to be for either team.
"It wasn't the greatest game, but overall you've got to be happy. If you can go away from home and pick up points like we have here then you're delighted.
"Silva's ([Tony) not played real competitive football for quite a while, we all know he's a talent, and we were starting two players who were making their debuts, the goalkeeper (Jonathan Miles) and him.
"I thought Miles looked very competent, but Silva began to run out of petrol towards the end so we brought on the boy (Mo) Sharif who I thought was fantastic.
"He's come on, he's thought highly of at QPR, we've brought him in, we've made a few changes and I thought the players who've played today have done really well."
There was to be a fiery end to the match with Barnet substitute Kyle De Silva being shown a straight red card for a high challenge on Daggers' Luke Wilkinson before Barry Fuller was sent-off after the final whistle for foul and abusive language aimed at referee Keith Hill.