stops being clever and devolves into flashy , vaguely silly overkill . 
(ROOT (S (S (VP (VBZ stops) (S (VP (VBG being) (ADJP (JJ clever)))))) (CC and) (VP (VBZ devolves) (PP (IN into) (NP (JJ flashy) (, ,) (ADJP (RB vaguely) (JJ silly)) (NN overkill)))) (. .)))
(ROOT (S (S (VP (VBZ ) (S (VP (VBG ) (ADJP (JJ )))))) (CC ) (VP (VBZ ) (PP (IN ) (NP (JJ ) (, ) (ADJP (RB ) (JJ )) (NN )))) (. )))