nut straight on board with flush draw what would you do

[Shandy]

Just thought this was an interesting hand between two other players at the table, had a discussion with my brother who thought there were two options on the river- fold or call, i felt that calling was out of the question and that fold or shove, with shove being my preferred option in this situation based on betting patterns. The $20 bet on the end does not look like a made flush to me, so looking at the hand from okutais point of view what would you do on the river, all we know about his hand is that it isnt 2 diamonds- so his hand is irrevelent.
pokerstars Game #11020404099: Hold'em No Limit ($0.50/$1.00) - 2007/07/19 - 12:47:14 (ET)
Table 'Goffin' 9-max Seat #7 is the button
Seat 1: BigBruin007 ($278.25 in chips)
Seat 2: Bruinhockey8 ($58.85 in chips)
Seat 3: 222shay222 ($61.05 in chips)
Seat 4: badugichamp ($100 in chips)
Seat 5: coldsteel333 ($178.95 in chips)
Seat 6: venkanto ($103.65 in chips)
Seat 7: bostonhitman ($168.30 in chips)
Seat 8: okutai ($70 in chips)
okutai: posts small blind $0.50
BigBruin007: posts big blind $1
*** HOLE CARDS ***
Dealt to 222shay222 [6c 6h]
Bruinhockey8: folds
222shay222: calls $1
badugichamp: folds
coldsteel333: folds
venkanto: folds
bostonhitman: calls $1
okutai: calls $0.50
BigBruin007: checks
*** FLOP *** [Kd Jd Ad]
okutai: bets $3
BigBruin007: calls $3
222shay222: folds
bostonhitman: folds
*** TURN *** [Kd Jd Ad] [Qc]
okutai: checks
BigBruin007: bets $5
okutai: calls $5
*** RIVER *** [Kd Jd Ad Qc] [Ts]
okutai: checks
BigBruin007: bets $20
okutai: folds
BigBruin007 collected $19.05 from pot
*** SUMMARY ***
Total pot $20 | Rake $0.95
Board [Kd Jd Ad Qc Ts]
Seat 1: BigBruin007 (big blind) collected ($19.05)
Seat 2: Bruinhockey8 folded before Flop (didn't bet)
Seat 3: 222shay222 folded on the Flop
Seat 4: badugichamp folded before Flop (didn't bet)

 

[jeffred1111]

Bad fold there, at least in my opinion. Unless you have a read on villain betting flush draws on the turn when they don't hit, Bruins probably had a solid holding up to the river (two pairs, set, etc.) and wanted to scare the other into folding when he figured both would be playing the board. Okutai probably reasoned that paying 20$ to split the pot or lose it wasn't worth it...

But why shove ? This I don't understand, since you have a pretty small pot and will only get called by the nut flush. And c/shoving is even worse since you're now facing someone who probably won't fold anyway (c/r this board screams steal attempt).

 

[shallow33]

feels like he's playing with scared money and short stacked at the same time