According to TMZ and other various sources YES!, he was. Here is the article from Antimusic.com ..
(TMZ) Lil Wayne was attacked with pepper spray Wednesday night in Canada, after some jerk snuck into his after party and put the excruciating substance in the air ducts.
It all went down last night at a club in Montreal called La Mouche -- where Weezy was hosting the afterparty for his show.We're told some jackass snuck into the back room and unleashed the chemical into the ventilation system -- and everyone had to be evacuated, including Weezy.
So far, it's unclear if police are investigating -- but a rep for Lil Wayne says the rapper is "okay and gearing for his next stop in Toronto."
I think that the rapper needs to stop buying million dollar watches and purchase himself a better security team, to prevent these situations from happening in the future. We hope he is ok , the person that did this to him obviously had A LOT of time on their hands.