You've been racing for quite some time before leaving, not just the video's length (an admin had time to notice it, tell other admins to spec etc), which makes it very hard to believe it was just some testing.
For testing such mods, the best option would be to check on other servers, or simply SP, but definitely not in AX and race mode (stunt mode would make it easy to test as you can set weather and car, but it's still forbidden). Anyway, same sanction as for any other illegal mods should be given.