Maple Leafs' Lupul responds after inappropriate tweet appears on air

Toronto Maple Leafs forward Joffrey Lupul used Twitter to respond to an incident that occurred during TSN's trade deadline show:
TSN just a poor mans TMZ. Embarrassing.
— Joffrey Lupul (@JLupul) March 2, 2015
Lupul's tweet was in response to a viewer's inappropriate tweet that appeared on-screen during the broadcast, the subject matter of which apparently ruffled the feathers of the 31-year-old Lupul.
TSN's PR department addressed the incident and apologized to Lupul and the Maple Leafs organization for letting the tweet appear on-air.
Earlier today, an inappropriate and disrespectful tweet was erroneously aired. As soon as it was flagged, we immediately removed it. (1/3)
— TSN PR (@TSN_PR) March 2, 2015
We’ve reached out to the Toronto Maple Leafs organization and all those impacted to extend our sincerest apologies for our error. (2/3)
— TSN PR (@TSN_PR) March 2, 2015
It should have never, ever gone to air. (3/3)
— TSN PR (@TSN_PR) March 2, 2015
The oft-injured Lupul has 19 points in 36 games.