Hmm.
Lets pick up with the fold and you're in the SB, cause its defo allin from here depending on the hole cards.
You didn't like your hand 66 and you've waited for another, better one. At your table there would be five hands left before you are forced to go allin realistically.
Whats the probability you will get a set of hole cards with a higher +EV before the next blind?
First hand 17%
Second Hand 31%
Third Hand 42%
Fourth Hand 52%
Fifth Hand 60%
As you can see your chances improve with the wait and are better than not within range.
Tournaments are about survival, and this could well be a situation where you save your bacon especially with the loose player and the hand vulnerable to the flop.
Both plays are reasonable, I just prefer the fold in this situation.