It was City's first victory in League Two since they beat Chesterfield 2-1 at the end of August.
"He added value right across the pitch and it's hard to quantify that," Tisdale told BBC Radio Devon.
"As a manager it is spectacular, as a punter he had a clinical game, but it was a wonderful debut in terms of helping and adding value to the team."
He added: "It was a marvellous performance when you consider the anxiety going into the game and what we produced.
"There's been a tipping point this week, not just players into the side, but the type of work we've done this week, and it followed into the game."