Evidently, it was only a rumor which could not be substantiated and was nixed by K's mom via her conversation with Cyber. So as far as we know, nothing like that was ever found and was mixed up with the items given to LE for the dogs to get their mark. The story is the chain was either missing or off in some way. I haven't heard any reports about flat tires. It would make more sense as to why the bike was left in that location tho.