Complex sentence: Heffron couldn't attend the show due to personal responsibilities to take care of in Philadelphia prior to going on his vacation the next day; still, his promo was aired on PPV and in the arena he was replaced by Big Tilly.
Split into simpler sentences: Heffron couldn't attend the show due to personal responsibilities in Philadelphia to take care of prior to going on his vacation next day. Still his promo was aired on PPV and in the arena he was replaced by Big Tilly.