As mentioned earlier,even driving away can be considered as a death evade and this term is too subjective that we should only make clear DOs and DONTs. This is allowed right now (but not mentioned in rules, sadly).
I think it is an evading trick just like teleporting upto the tall tower in SF map. But I don't have a problem even if they forbid it on ground by making /ej invalid cmd when the rustler is at ground level. That won't happen unless admins (and most of the regulars) believe this is a major concern so let's just deal with it.