yup I do the same thing some times.Just today
I was playing at  a table and had connecters I bet
a good amout before the flop 2 callers and all low cards
come.I have an open ender.thinking the other 2 players have
high card I check and reraise.one player leaves the other is
hesatant but calls.there is also a flush draw.So I was thinking
thats what the other player has the river comes
I miss my card and have a busted straigt draw but i know the other
player had nothing so I go all in with the remader off my chips.He calls me and wins with  10 high.I couldnt beleave he called me with
a ten high.My  conneters were 8 9.I would off normaly folded
and wouldnt off chase a straight especialy if there is a flush draw but I
new the other player had nothing and he did have nothing.Still can t
beleive he called.Lost over half my bank roll on that hand.Thats what I get for playing 8 9 off suit but what a donkey calling an all in with 10 high and the bad thing was he didnt even have the flush draw.

You had about a 55% chance of winning this one.  Actually, you were willing to try a coin flip.  Sometimes it works and sometimes it doesn't.  I don't think you did anything wrong.  Were you planning on 3rd place or did you want to win the tournament?  It sounds like you were playing to win.  Not a bad idea at all.

If there,s one BIG Stack out of 4 you definately hope to play behind the Big Stack and not attack them. But PUSHING an ACE-7 (not too bad 4 handed) at the lower stacks Blinds isn,t a bad move. Just try to stay away from the Big Stack. With only 4 left i,m assuming the Blinds were Big.