More sacrificial mayhem

Three times in the last session I played my partner passed the first round or two of the auction then with the slightest provocation jumped gleefully to the 4 or 5 level. It was a bit scary. None were more spectacular than when he attempted a nil-vul sacrifice holding:

♠	-
♥	T 3
♦	A J 9 8 2
♣	J T 9 5 4 3

The auction went like this:

Partner	East	Me	West
Pass1	1♠	2♥	2♠
Pass2	4♠3	Pass	Pass
4NT	X4	5♣	Pass
Pass	X5	Allpass

1: We don't have an opening for this sort of hand so what else is there to do?
2: This auction is basically forcing, you never pass them out in 2♠ at pairs.
3: Bid confidently and without a moments hesitation.
4: Clearly penalties. I love these doubles they always make me smile inside.
5: Doubled the last contract, gonna double this one!

If you think partners void in trumps meant I might have a few you could be onto something. If you think that he might be holding an Ace too many for a sacrifice opposite a two level overcall you are onto something. I completely thwarted his attempts at sacrifice by holding:

	♠ - ♥ T 3 ♦ A J 9 8 2 ♣ J T 9 5 4 3
♠ Q J 6 5 ♥ K 9 4 ♦ K T 5 3 ♣ 8 6		♠ A K T 9 7 4 3 ♥ Q 7 2 ♦ 7 ♣ K 7
	♠ 8 2 ♥ A J 8 6 5 ♦ Q 6 4 ♣ A Q 2

Not only has he jumped against a non-making game but the contract we've bid puts most freezers to shame. This sacrificing thing is clearly harder than it's made out to be.