The Flyers evened out their second round playoff series by thumping the Vipers 7-2 last night in Leamington.
Griffin Robinson paced the attack with a hat-trick while Josh Pope-Ferguson helped out with a pair of goals.
Zach Guilbeault and Liam Hogan added the singles for the Flyers, with the series now tied at two.
Liam MacDougall and Zack Hoffman had the LaSalle goals.
Game five will take place Wednesday back at the Vollmer Centre.