Delete the associated .properties file from the zip to disable CTM on any of the following blocks.

stone			"block1.properties"
soil			"block3.properties"
cobblestone		"block4.properties"
sand			"block12.properties"
gravel
			"block13.properties"
mossy cobblestone	"block48.properties"
netherrack		"block87.properties"
end stone		"block121.properties"
grass			"terrain0.properties"
bookcase		"terrain35.properties"

snow			"terrain66.properties"