Another AK dilemna PF...help plz.

[GreatKerblini]

So FTP 109. 650 started. 250 left. Blinds 100-200. Avg 8k.

UTG (3K) raises to 500. No read on him.

All fold to SB (14K) -- Reads: three hands prior, he had shoved over the top of a MP (4kish) 3x raise. MP folded (I had AK that hand and laid it down)..This time, SB instaShoves again.

Hero (8k) in BB with AKoff....caaa....fooo....meh?

[Hattifnatt]

first hand sounds like a call even though all info isnt provided, 2nd is closer but I think its a call with that history.