Synonyms for Unwind (same or very similar meaning)
WordNet sense 1 (separate the tangles of):
disentangleWordNet sense 2 (reverse the winding or twisting of):
unroll, wind offWordNet sense 3 (become less tense, rest, or take one's ease):
decompress, relax, unbend, loosen upWordNet sense 4 (cause to feel relaxed):
unlax, unstrain, make relaxedFrom the ODE community, based on WordNetadd/edit