When O’Neill took the temporary payment from Celtic last month, he walked into a club that was stoned by the internal division, highlighted by the exit of Brendyan Rodger’s armistice.
Hearts beat Celtic 3-1 at Tynecastle to move eight points clear, with the 73-year-old credited with righting the ship.
Although they were comprehensively released by Midtjylland on Thursday, O’Neill sent the home front, which took all the matches, reaching the GAPE SPORD SPIR SPACH CUPA in CUPER BY.
Celtic’s attack has been unleashed under the northern Irishman, who has scored 11 goals in those games.
The champions have managed to score just 10 of their last seven domestic matches under Rodger, with four of them coming in a league cup win.
O’Neill praised the nature of Celtic’s 4-0 win at Kilmarnock on Sunday, but stressed they have a lot of work to do if they are to defend their title.
“There are some parts of the show that I’m absolutely delighted with,” he said. “We defend hard.
“You need help when you’re chasing someone, but there’s a long way to go.”
On his own future, he continues to not give away, admitting that he does not know if he will be in charge of ST Mirren at the time of ST Two weeks.
If the win against Kilmarnock proves to be the last game of his second spell at the club, he says he will be happy to accept that.
“I’m going to take a little time off on the international break, most of our players are going, and there will be time for internal reflection,” he said.
“It’s been a whirlwind of a week, I can’t believe it’s actually happening.
“I really don’t know [if I’ll be back in two weeks]. If the board makes up their mind, it’s absolutely fine with me. “