Ideally, the BSD licence would be switched to Apache, but you can only do that without asking for code entirely written by Mozilla employees. Playdoh isn't Apache yet so Lumbergh can't be :-|

GSAP is closed-source, so we shouldn't be using it. If it's in use elsewhere, that's a bug. Our use seems not to be against their licence so it's a policy problem, not a legal problem, but we have the policy for a reason. 

Last time this happened I wrote this: http://blog.gerv.net/2013/02/non-open-source-code/ .