Quote (ThomasPaine @ Feb 8 2013 06:24pm)
Locking out in the upper part of the RoM requires no strength lol
It requires back strength to lock out, assuming that you're rounding at the thoracic. Read it in context, dammit. (First line of the post you quoted)
A deadlift isn't completed until the shoulders are brought back, if you weren't aware. That's why people hitch, because they can't lockout.