I think the flop call was marginal with regards to pot odds
a break even situation pot=420/bet 140 odds against for the straight 3 to 1. 140x3=420. However the implied odds are very good.
It's the turn that complicates everything. with the pot and villan bet the pot=1560, twiz needs the pot to pay 1548 for the call to be correct. I figured this with 16 outs. pot/1560/bet 860 odds against 1.8 860x1.6=1548. (if we round up to 2 it's 1720 to call so we fold.)
[Your outs, knowing now what we didn't know then, were in fact 13. Four aces, four sixes and 5 diamonds (that are not aces, sixes, fours or fives).]?
i can't seem to find your outs here fpaul.
So from a purely pot odds situation he is just barely getting the right odds to call. now i fold here on the turn. and save my chips so i can get them in on a better situation. the call is just to close but it can go either way if you want to gamble. IMO.