After collapsing to a surprise 3-0 Clydesdale Bank Premier League loss at Ross County last Saturday, the Fir Park side stunned Celtic in midweek before emerging 2-1 winners at Hearts on Saturday.
A blistering start saw the visitors storm two goals up after only eight minutes. Michael Higdon netted his 20th of the season before Dylan McGowan was credited with an own goal.
John Sutton scored for Hearts - who had Gary Locke and Darren Murray in joint-control in the first game since manager John McGlynn's departure - but the visitors held on to move three points clear of Inverness.
McCall said: "It was a big result because it was probably the lowest I felt last Saturday, it just shows you the highs and low of football.
"We've bounced back, two gritty performance as much as anything and the table looks a little bit rosier now.
"All managers ask for a good start, it was important to start well. With Lockie in charge, I knew the crowd would be up for it.
"I was delighted with the start and then the pitch began to cut up. We played some good football and we knew it was always going to be a battle in the second half.
"Coming in 2-0 at half-time was great. They scored and they put a lot of balls in the box but we stood firm."