It's still tempting to keep, even if i can get your much better Togekiss. :c
But whatever, i think i'll follow your advice.
After posting I noticed you said "probably hasty". With IVs like those (being 25+ SpA 28-31 Speed), you should always check the nature and make sure it's not timid. If that was timid, I'd probably keep it and hope it becomes serene grace. Hasty is a toss in my opinion. Also if those are the IVs for a neutral nature, it's more likely to be Timid because of 0-3 Attack IV or Naive because of the 6-9 Special Defense. Just saying, you should check the nature before posting.
Teach it Counter, and call it good.
Suppose you could teach it counter, but I generally run Choice Specs, Choice Skarf or Life Orb > the Focus Sash needed for Counter. That would also screw with it's coverage, which should be Air Slash, Aura Sphere, Tri Attack, Fire Blast / Hidden Power Ice (in my case)