What? It was spreading the floor; Bosh's presence pulled defenders out of the paint, creating more space for LeBron and Wade to attack.
Geez, so caught up in one detail you are missing most of what was said, and I don't think 18ft is as good as all the way to the 3pt line... not saying its bad.
Bosh though is not a 5, and that year he and Haslem started most of the games at 5 and 4... so then Haslem was the "5" and not spreading the floor.
The point is LeBron doesn't have to have a 5 on the team to spread the floor for him. Kanter "spreading the floor" for LeBron does not automatically make more sense than Kanter with someone else.
Guarding someone like Bosh out there is different than guarding Korver at the 3pt line when it comes to help defense and how far you sag off.