Not cancelled, nothing is ever cancelled on [AS]. Unless they don't own the rights to it anymore.
Anyway, they accidentally aired the most recent episode wholly uncensored. And now the show is in reruns. Normally a show being in reruns after 6 episodes wouldn't be that big of a deal, but only if the ending episode is something you know for certain was the definite intended season ending, like with Mongo Alliance. How many episodes were in its first "season"?
But thing about this is, slipups like this usually invoke the ire of the higher ups in charge of S&P. I heard Crofford and/or Lazzo had words or something for this.
Has there ever been a time where Brad Neely didn't push the envelope with Adult Swim?