It's not a bug, altho i think the side affects of more and more people doing are causing bugs to ordinary toons doing their stuff.
There's nothing we can do other then report it, altho i think they have a hefty list of those lying in TT HQ now anyways, I would say they are trying their best to find a coding a solution to stop it.
But if this is an invasive hack, as it sounds like it is (havent a clue how its done so dunno, but sounds like more then a going through wall mini glitch to me), then it can be difficult to find good way to stop it.
It seems that Disney Online are doing nothing to stop it, as the cheaters are still there, however I get the feeling or hope anyways, that they are looking to stop problem at source of hack, so it can't be passed around, rather then just banning everyone who stupid enough to think it fun to use it.
Your best bet is to either, find some peeps on here and race with them away from cheaters, or write down the names of any cheaters you know of, and dont race with them.
Either way its hassle racing these days, if you want chance of winning every race you enter, which obviously we all want, as that the most reward.
'Keep it Kool
'