After Crobat reports back to Brock and company, it disappears for the rest of the episode, as Brock is never seen recalling it back in its Poké Ball.
In one scene, Pikachu's voice can be heard, but its mouth does not move.
In another scene the opposite is true for Croconaw, as it's mouth moves, but his voice can't be heard.
Brock once refers to Larvitar's mother as a male.
When the remote broke to pieces, Ash and company were able to break free from the bag. But Team Rocket Trio, who had also been captured in the bag, were not freed, as is evident from the end of the episode.