Insane HH from Niagara 10k involving THE Vanessa Rousso (and Shaniac)

[Clayton]

Hero is cdbr3799, talented mtt player and pocketfives allstar.

Use your own reads for the two main villains in the hand, Shaniac and Vanessa Rousso.

I am reposting this from the p5's thread that SCTrojans made.

25-50 blinds
effective stacks all 20k

cdbr3799 raises UTG+1 with 4h7h to 150
UTG+2 calls
UTG+3 calls
Cutoff calls (shaniac)
SB calls (vanessa rousso)

flop 8s 6s 5d

SB checks
CDBR3799 bets 400
UTG+2 folds
UTG+3 calls 400
Cutoff (shaniac) raises to 1800
SB (vanessa) raises to 4200

WTF do you do if you are CDBR3799?

There are no real reads on players other than what you already know about Shaniac/Vanessa - this hand is about 7 minutes into the tournament.