Both Ways

If a certain event is not big enough for you to postpone a the already ambitiously timed release of major project (the dates for which are fully under your control - and let me be clear that I think the event in question IS big enough for you to delay), then it's not an acceptable excuse for you NOT to do what you promised for me - three weeks ago! - as I work in support of that project and its release.

Just sayin'.