Complex sentence: Cordelia being Xander's spell target was what moved her back to Xander's arms was probably the only weak point of the episode, although it would not be out of character for Cordelia to feel moved by an extreme gesture to curry her favor.
Split into simpler sentences: Cordelia being Xander's spell target was what moved her back to Xander's arms was probably the only weak point of the episode. Although it would not be out of character for Cordelia to feel moved by an extreme gesture to curry her favor.