I don't think I agree with the orphan drug strategy, if this had any bearing on delays tacit or otherwise, with Adalimumab VISUAL trials underway.
FWIW I was intentionally only indirectly linking two thoughts (behcets only & pursuit of orphan) because I too doubt that they would entirely pre-plan for this result. However I do think the two thoughts might be more indirectly linked in some way - e.g. at the very least the decision to file with Behcets instead of waiting for another trial might be by-intent.