If its a limped pot, that means that with 5 people in, the pot should be about $1.25 right?

So if he bets 6$ he's overbetting the pot by over 4 times right? That to me is the sign of someone who's got something big.

Straights on a 3-flush board arent so great. I would have folded after he made that giant overbet as he was probably trying to protect his flopped flush, so that no one with A or K of spades could see a turn or river card.

Also, this should be in the hand history forum (but not in the bad beats forum lol), since thats the forum where we go over specific hands.