wow, the analysis going into this hand is quality, think i have learnt loads just from this post. I would never 4bet in this spot simply because worse hands will fold to this, better hands 5bet making me fold and oh hes quite capable of 5bet bluffing leaving trigg no option to fold too. call behind on flop is perfect for plenty of reasons, i personally check behind on turn for pot controll then bluff catch a much smaller bet on river or check behind. with how the hand is played out this is an extremely tough decision, no doubt trigg was prolly 4/5 tabling at this point too. so decision time is limited. The huge bet on the river stinks of strength for me, god forbid if i ever got in this situation with these stakes i probably find a fold and wait for a better spot.
p.s did someone refer 'aaron brunskill' as a sheffield Grinder??? lol had him on my table for 4 hours in the 150 deppstack at dtd last friday. kept telling me i was the worst player at the table as i increaded my stack to around 4x tourney avg. meanwhile he kept calling 8/9 bbs off in 3bet pots the folding and even leading then folding flops!! funny chap tho!!