Double deuce disaster

I just lost $40 in 72 hands of single draw, losing nine of the ten hands I showed down. My bankroll is $812 and seems to be in a holding pattern around the $800 mark. A year ago I had a lot more upward momentum. This morning's badugi session was a swingy one - I was down $40, then back to almost even, then down $40 again, then up $40, before finishing up a little over $20. I guess I had to be happy with that.

Here are the two hands that led to my swift single draw demise:

Hand 1
I really must stop underestimating the strength of my opponents' hands. Here I should have done the safe thing by calling his reraise and drawing to the eight. I couldn't have got away if I'd hit a seven, but still. By four-betting I'm almost turning my hand into a bluff which probably won't work all that often.

PokerStars Game #70779185738: Single Draw 2-7 Lowball No Limit ($0.25/$0.50 USD) - 2011/11/19 2:40:02 ET
Table 'Pythia III' 7-max Seat #4 is the button
Seat 1: ThaSlosh23 ($37.35 in chips)
Seat 2: plutoman20 ($27.85 in chips)
Seat 3: gabialx ($44.40 in chips)
Seat 4: Ctac!!! 1986 ($13.55 in chips)
Seat 5: drcrabbies ($8.10 in chips)
Seat 6: MeMe766 ($15.20 in chips)
Seat 7: HILWAR666 ($37.50 in chips)
drcrabbies: posts small blind $0.25
MeMe766: posts big blind $0.50
*** DEALING HANDS ***
Dealt to plutoman20 [5h 9d 3c 8c 4h]
HILWAR666: folds
ThaSlosh23: folds
plutoman20: raises $1 to $1.50
gabialx: folds
Ctac!!! 1986: folds
drcrabbies: folds
MeMe766: raises $2.50 to $4
plutoman20: raises $7 to $11
MeMe766: raises $4.20 to $15.20 and is all-in
plutoman20: calls $4.20
MeMe766: stands pat
plutoman20: stands pat on [5h 9d 3c 8c 4h]
*** SHOW DOWN ***
MeMe766: shows [7s 4c 3h 8s 2c] (Lo: 8,7,4,3,2)
plutoman20: shows [5h 9d 3c 8c 4h] (Lo: 9,8,5,4,3)
MeMe766 collected $29.15 from pot
*** SUMMARY ***
Total pot $30.65 Rake $1.50
Seat 1: ThaSlosh23 folded before Flop (didn't bet)
Seat 2: plutoman20 showed [5h 9d 3c 8c 4h] and lost with Lo: 9,8,5,4,3
Seat 3: gabialx folded before Flop (didn't bet)
Seat 4: Ctac!!! 1986 (button) folded before Flop (didn't bet)
Seat 5: drcrabbies (small blind) folded before Flop
Seat 6: MeMe766 (big blind) showed [7s 4c 3h 8s 2c] and won ($29.15) with Lo: 8,7,4,3,2
Seat 7: HILWAR666 folded before Flop (didn't bet)

Hand 2
Unlike the first hand, this one is close. Obviously I shouldn't have let my stack get this low but it might have saved me a few dollars here. I was unlucky of course to lose by one pip. I think it could be +EV in future to avoid ThaSlosh, who I've coded orange for some time.

PokerStars Game #70779238693: Single Draw 2-7 Lowball No Limit ($0.25/$0.50 USD) - 2011/11/19 2:43:03 ET
Table 'Pythia III' 7-max Seat #4 is the button
Seat 1: ThaSlosh23 ($34.60 in chips)
Seat 2: plutoman20 ($12 in chips)
Seat 3: gabialx ($47.40 in chips)
Seat 4: Ctac!!! 1986 ($12.80 in chips)
Seat 5: drcrabbies ($8.10 in chips)
Seat 7: HILWAR666 ($36.50 in chips)
drcrabbies: posts small blind $0.25
HILWAR666: posts big blind $0.50
*** DEALING HANDS ***
Dealt to plutoman20 [7d 2s 2c 5s 4d]
ThaSlosh23: raises $0.75 to $1.25
plutoman20: raises $2.50 to $3.75
gabialx: folds
Ctac!!! 1986: folds
drcrabbies: folds
HILWAR666: folds
ThaSlosh23: raises $6.50 to $10.25
plutoman20: calls $6.50
ThaSlosh23: stands pat
plutoman20: discards 1 card [2c]
Dealt to plutoman20 [7d 2s 5s 4d] [8s]
ThaSlosh23: bets $1.50
plutoman20: raises $0.25 to $1.75 and is all-in
ThaSlosh23: calls $0.25
*** SHOW DOWN ***
plutoman20: shows [7d 2s 8s 5s 4d] (Lo: 8,7,5,4,2)
ThaSlosh23: shows [5d 7h 8h 3s 2h] (Lo: 8,7,5,3,2)
ThaSlosh23 collected $23.60 from pot
*** SUMMARY ***
Total pot $24.75 Rake $1.15
Seat 1: ThaSlosh23 showed [5d 7h 8h 3s 2h] and won ($23.60) with Lo: 8,7,5,3,2
Seat 2: plutoman20 showed [7d 2s 8s 5s 4d] and lost with Lo: 8,7,5,4,2
Seat 3: gabialx folded before Flop (didn't bet)
Seat 4: Ctac!!! 1986 (button) folded before Flop (didn't bet)
Seat 5: drcrabbies (small blind) folded before Flop
Seat 7: HILWAR666 (big blind) folded before Flop