In all honesty twitter is your best bet but only after a while. I'd say the chances of you getting your account back are extremely slim. Just make a fresh one and pay for it to be levelled (by hand) up to your old ones if you want.
Alternatively 07 is a great alternative with infinitely better moderation.
Wait a bit...i asked a friend who is a pmod and he said it is appealable...it just will take time....he was laughing his ass off when he heard this as well as I.
This is a whole new level of RWT. But seeing as it actually does meet the RWT criteria as well as uh... explicit soliciting I feel as though the odds aren't in your favor...good luck though, tweeting is your best bet.
Jagex takes these types of threats as serious. They can't tell if you're joking or not, I'd advise you not to joke about these types of things as they've been under scrutiny in the past as runescape used to be a perfect pedophile breeding ground.