2 pair, do you fold?-What do you do?

PokerStars Game #25180654539: Tournament #142475011, $1.00+$0.10 Hold'em No Limit - Level IV (50/100) - 2009/02/21 3:18:52 ET
Table '142475011 1' 9-max Seat #5 is the button
Seat 1: GJRSV (990 in chips)
Seat 2: MardiGrahl (1395 in chips)
Seat 4: edcjwu (2070 in chips)
Seat 5: JR Shagnasty (2110 in chips)
Seat 6: Ruaidhrí12 (2995 in chips)
Seat 7: satyagyan (2550 in chips)
Seat 8: TorontoFCMan (2080 in chips)
Seat 9: krysijo44 (665 in chips)
Ruaidhrí12: posts small blind 50
satyagyan: posts big blind 100
*** HOLE CARDS ***
Dealt to Ruaidhrí12 [Ad 4c]
TorontoFCMan: folds
krysijo44: folds
GJRSV: folds
MardiGrahl: folds
edcjwu: calls 100
JR Shagnasty: folds
Ruaidhrí12: calls 50
satyagyan: checks
*** FLOP *** [Ah 4s 2h]
Ruaidhrí12: bets 200
satyagyan: folds
edcjwu: calls 200
*** TURN *** [Ah 4s 2h] [6h]
Ruaidhrí12: bets 600
edcjwu: raises 1170 to 1770 and is all-in(instashoved)
Ruaidhrí12:????


Please explain what you do and why?