Super Junior M's Henry pants was ripped during SMTown Tokyo Special??

What had happened to Super Junior M Henry during the SMTown Tokyo Special Edition?? Check out what had he tweeted just now:

WOW Henry Henry, we might not know about it if you don't tweet about it. Now??? Everybody knows about it!!!! And it's on the world twitter trend!!!! XD 

Netizens asked Henry why he wanna tweet about it?? Now everyone from the world knows it LOL