The German was thrilled by the 4-1 victory, a result which stunned the National League after the Latics’ emphatic few weeks.
It was the Kent club’s first win since September after their solid return to Step 1 threatened to spiral into a struggle.
Fleet remain in the bottom four, but they won’t be there for long if they can produce more of the same in the months ahead.
But wary Kutrieb says his team can’t think they’ve cracked it after a weekend to remember in greater Manchester.
“It was a beautiful way to win a game,” he said after a first victory in ten. “It was a long way coming - some other of our performances were really good, it’s not obvious to see that when you’re losing.
“Hopefully we can kick on from here. It’s been a long time since we last won a match. I could see everyone was relieved and happy. After many weeks, even months, of suffering we can enjoy it.”
But he warned: “We now need to go out and do it again. We need to keep winning football matches.
“We’re together as a group. When we come back we need to work hard again and kick on. We need to prove that we’ve got it in us to do it again.”