Don't have hand history, but...
Blinds at 20/40 and just took a biggish pot with rockets.
Am in mid position. Hold AQ diamonds. I raise to 140. Cut off, who is second chip leader at table to me, raises to 440. He's been LAG but haven't seen him make a move like this.
1. Do you lay down?
Let's say you don't

And the board comes J62, two diamonds. The pot is 1200 or so. You're first to act.
2. What's your move?
Let's say you bet 400 and he moves all in for his remaining 2400 chips. Calling this and losing would leave you with about 1800 chips. Average chip stack at about 2500, 60 players left.
3. What's he holding and what to do?