NL100 AJ tp on the flop against shortstack and unkown

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Poker Room skin
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
Hero: $104.35
CO: $52.75
Button: $87
SB: $23.65
BB: $78.15

Pre-flop: (5 players) Hero is UTG with A[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/diamond.gif[/img]
<font color="#cc0000">Hero raises to $3.5</font>, 2 folds, SB calls, BB calls.

Flop: 5[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/diamond.gif[/img] ($10.5, 3 players)
<font color="#cc0000">SB is all-in $20.15</font>, BB calls,


both players a unknown, im sure im ahead against the shortstack but what about the BB? Should i shove?