400bb deep against a maniac

Long-time lurker, first-time caller. Apologies for the long post!

This is a 1-2 game early Friday evening at Mohegan Sun.

H - 32 y/o WG who should be known to the regs at the table as a solid TAG. However, this session I have played a series of bizarre pots and am stuck several hundred dollars. I also just got a big all-in river bluff through (against the same V in these hands coincidentally) and I showed it afterwards, so I may have the appearance of being a bit tilted and aggro.

V - Late 30’s/early 40’s WG who looks a bit like the actor Brett Gelman. He is the titular maniac. Currently several Jim Beam and Diet Cokes in and starts the hands off close to 2k deep, which is very rare at MS 1-2. He has been bullying the table, raising and re-raising a ton pre and often overbetting flops, seemingly to generate folds from the weak-passive fish at the table.

Extremely relevant HH:

AKo - Maniac open limp CO, I iso $15 next to act on the button, folds to maniac who limpraise $40. This strikes me as very likely to be a bullshit hand, given the positions and my history with the player. I consider flatting to trap, but this guy has a fold button (he previously folded the river to me facing an all-in river raise and has folded a few other times in big pots) so I decide to 4b $140 leaving around $320 back. He pretty quickly jams. I say, “I actually think you have it here, but I can’t fold” and call. He doesn’t look happy. I ask, “Do you have aces?” and he doesn’t say anything. I table my hand.

The flop is TT8dd. He checks his hand and I catch a glimpse of what I believe is Q7o. He says, “I think I am drawing dead.” The turn is a 7. He doesn’t move. The river is a 5d. He still doesn’t move and I brace myself to be slowrolled, but he mucks and I drag a pretty huge pot.

I don’t know whether I misread his hand when I glimpsed it or if he misread mine, but this is some context for what comes next.

OTTH

Several hours have passed. The maniac seems to have been subdued after punting off nearly 1k of his stack. He has still been VPIPing nearly 100% of hands, but has been limping and using “juicer” raise sizes, whereas before he was sometimes opening to 15bb or 20bb over a few limps. It doesn’t seem like he wants to play many big pots anymore. I have stacked another fish at the table and now cover him in position. We start this hand $820 effective.

AKcc - Fish open limp, maniac iso to $6. I 3b $25 and it folds to the maniac who 4b $75. I consider 5b, but think a lot of my hands (including maybe aces) will just call in-position this deep, so that is what I do.

Flop is Jh Th 5c. ($155 before rake)

V cuts out two full stacks of red and methodically counts out $150, then stacks it up into one tower and slides it into the middle.

Hero?