The aforementioned 7-line script doesn't contain the keys necessary to decrypt DVDs. That, MIT argues, makes it legal (or, rather, doesn't make it illegal).
Regardless, this is a good discussion to have, since this type of issue is bound to come up again in one form or another.
In this case, I approve of this form of preemptive censorship. It's not polite to wave a red blanket (a purported DVD cracker) at a bull (the RIAA) when a third party (vroom) is innocently standing behind the blanket. For the vast majority of people here, this is the wrong forum to pick a legal fight. It could be disasterously bad for the entire community. If vroom decides otherwise, let him make that call.