He said lawmakers set a potentially "dangerous" precedent that could appear in the "Guinness Book of World Records."
A statement posted on the government's website says Kulov made those remarks at a meeting with the head of the OSCE center in Bishkek, Markus Mueller.
Addressing reporters after the talks, Mueller also admitted that the new law was adopted in great haste.
"Of course, the way this constitution was [created] in such a short period of time is very special in the world, I don't know of another example," he said. "But it has to be understood in the [context of] crisis management. And it has to be seen in a positive sense, that it is the new base to continue the work which was started."
the law in two swift readings on November 8, and embattled President Kurmanbek Bakiev signed it into law the next day.
The vote ended a week of tension that saw thousands of demonstrators rally in Bishkek to demand Bakiev and his team's resignation if they did not swiftly usher in stalled reforms.
Many observers and foreign governments have praised Kyrgyz officials and their opponents for reaching an agreed settlement to the crisis.
Bakiev's predecessor, Askar Akaev, was swept from power in March 2005 after a series of opposition demonstrations that followed flawed elections.
(gov.kg, 24.kg, AKIpress, Interfax)