Lacour's size (5'10'' ripped at 230 lbs) is Arnold-esque, which would seem to infer steroid usage... but then again his muscle development is not at Arnold's level. He makes up the size with glutes, hams, thighs, calves, and a thickly muscled midsection.
Is he truly natural? I don't know.
But I do know from training natural bodybuilders for competitions that the vast majority of natural trainers are sorely misguided (steroid users even more so).
Naturals are right to doubt the natural status of someone who has surpassed their FFMI (a topic on the Natural board discussed the Fat-Free-Muscle-Index at length), but similarly the vast majority of naturals who scream "ALL DRUGS!" are those who are painfully short of the FFMI quotient themselves.
I gotta start answering questions gh15 style for naturals before the misinformation becomes irreversible.
The Luke