Looks like leaves are very close together (vertically on apical meristem, trunk). Internodal spacing will be near zero, but i can't see in picture as well as you can in real life.
if that's true, move light further away and it may time a while to recover... if not.. you are probably right about it.
can always raise the others, raise light, and that makes the canopy the same distance, but moves this one further. net may make tha tdifficult, i guess... move to corner, that usually has less light