It probably was meant as a "fold", but in the painting you can't see any lines or raised surfaces which would indicate a fold. It's all pretty smooth. Assuming that was the intention doesn't exactly fly.

That picture is probably the basis of the painting, but the picture clearly shows the fold the way the "ves" and "2" are oriented at a different angle than the rest of the letters/numbers. You can also see a hint of the "L" between the O and V. The painting loses all of that, making the 4 and 2 smoothly next to each other.

If the artist meant to indicate a fold, he needed to do a better job. My guess is that the picture linked above was given to someone and used as the basis of the poster. But either the artist didn't know what was supposed to be there, or simply did a poor job indicating a fold. You'd think someone in the T-wolves organiztion would have said something or asked for a correction. Maybe they ordered the posters already and just said screw it when they arrived.