Well, sure.But the point was the timing of the statement. After he said that they prevented a Liberal NDP coalition, the NDP, seconds later, gained a seat, allowing a Liberal NDP coalition of 172 seats, if they chose to do so.
If they did a coalition now they would have 175.
none of the parties (NDP included) is willing to change that.
The NDP got to form government due to vote splitting, and should the UCP split vote splitting would hand them the election again so I wouldn't be that surprised.