plo $100 deep

[darkcore]

sorry for not having a convertable hh. action/stacksizes should be close to correct, though.

i suck at deepstack play. comments welcome on all streets.

sb ($65)
hero is bb ($320) A[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img]
mp (60/20/1/50, was already deep when i joined the table, no further reads) ($270)

preflop
mp bets $4.5, some callers, i decide that i am oop and we both are deep so i just call (should have raised, right?)

5 to the flop ($20): 9[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/spade.gif[/img]

mp bets $10, sb calls, i call with my straightdraw. all others check/fold.

3 to the turn ($50): A[img]/images/graemlins/heart.gif[/img]

sb bets $47 and is all-in
hero was just sandwiched, uses some foul language and does not know what to do.
the other deepstack is still left to act.

so what is my play here?

just curse some more and fold?
do i call hoping mp just comes along and re-evaluate river or fold to a rr?
what are better lines for the others streets?