The Panthers, who overcame three one-goal deficits to snap a four-game losing streak, had three power-play goals, twice scoring with a two-man advantage. Florida improved to 4-10-5 away from home, but it was their second win in Boston.
Villie Peltonen, Rostislav Olesz and Olli Jokinen scored for the Panthers, and Gary Roberts added an empty-net goal. Stumpel also assisted on two goals.
Glen Murray scored his team-leading 15th and 16th goals for Boston, and Marco Sturm also scored.