I understand the urge to double 1N, and maybe it is winning mp tactics. My fear is that I am going to catch partner with nowhere to go. I'm also, tho somewhat less, concerned that he might take a piece of 2
♠ should this, entirely foreseeable, auction occur.
To me, double by him would have been penalty: with takeout with 2 places to play, he bids 2N to grope towards the best spot. Note that he won't have all 3 side suits....there are only so many spades around and he holds some of them.
I'd rather preserve the integrity of my double by having something a little more like a near-opening hand.
However, I can see the argument that you are better off doubling 1N than passing and having to double 2
♠ when it comes back to you. The counter is that it may not come back to you...they may bid something else or RHO may raise, and now you'll be happy you didn't paint a roadmap, in addition to perhaps endplaying partner into a losing situation. Also imagine redouble by opener and partner has a 5=3=3=2 4 count....RHO was about to bid 3N

I don't advise scared bridge but kamikaze isn't my cup of tea either.
Having doubled once, bidding again strikes me as insanity. Even seeing the question posed makes me think that maybe partner hesitated over 2
♠ (understandable if he was trying to work out what double would mean).
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
MPs scoring, w/w, do you agree with the bidding so far? What would you do now (in a normal system)?
At the table, partner decided that if he doubled 2S, it would be responsive, what do you do in this situation? (other than regret playing it? or something along those lines)