Finally someone who doesn't try to invent new rules and accepts that there are consequences. Big kudos, mate.
Tho I think anyone at this level would allow you to delete this giveaway without any problem.
Said that, your experience tells you there are groups for keys you're not sure they work due to their source, LB, Delete key if it doesn't work... But I guess this key is not the case.
Anyway, again it's nice to see someone posting about those potential problems in a sensible and humorous way. Yes it made me smile, nice touch there!
Here, have a blue heart.

What if winner asks you to delete giveaway? After all, in case like that winner has to wait 2 (or 1 i don't remember) weeks before he/she can enter for another giveaway for this game :)