Raise and hope he 3! so these nutjobs can call. You have 2 or 3 outs to a likely split (depending on whether the 9 in his hand is 9

), and 9 outs to the pure/likely nuts. These players are clearly hemorrhaging money, and the pot is huge.
Board: 6h 7d 8d 2s
Dead:
equity win tie pots won pots tied
Hand 0: 21.862% 19.73% 02.13% 309701 33488.42 { AdTd }
Hand 1: 71.367% 66.91% 04.46% 1050340 69953.50 { T9s, T9o }
Hand 2: 01.716% 00.87% 00.85% 13643 13290.33 { 33+, A2s+, K2s+, Q2s+, J4s+, T6s+, 96s+, 86s+, 76s, 65s, A2o+, K5o+, Q7o+, J7o+, T8o+, 98o }
Hand 3: 01.720% 00.96% 00.76% 15018 11980.92 { 22+, A2s+, K2s+, Q2s+, J2s+, T3s+, 95s+, 85s+, 75s+, 64s+, 54s, A2o+, K2o+, Q5o+, J7o+, T7o+, 97o+, 87o }
Hand 4: 01.737% 01.03% 00.71% 16187 11072.25 { 22+, A2s+, K2s+, Q2s+, J2s+, T2s+, 93s+, 84s+, 74s+, 63s+, 53s+, 43s, A2o+, K2o+, Q3o+, J5o+, T6o+, 96o+, 86o+, 76o }
Hand 5: 01.599% 00.95% 00.64% 14979 10120.58 { 22+, A2s+, K2s+, Q2s+, J2s+, T2s+, 92s+, 82s+, 73s+, 62s+, 52s+, 43s, A2o+, K2o+, Q2o+, J3o+, T5o+, 95o+, 85o+, 75o+, 65o, 54o }