You're going to get a 50/50 response, so it's up to you. I personally think it could use a little trim up just to get some light and air in there.
One thing I've been pondering is nitrogen consumption caused by the defoliated plant regrowing the leaves. Especially the second defoliation after the stretch, since the N is cut back during flower. Would it be enough to potentially cause deficiencies in slower flowering plants, or is it basically sluffing off excess foliage fuel and going into flower a lean mean bud growing machine?