You know how much I like reads...but, if the big stack is loose, I think you ought to fold hand one. There's not much reason for him to get involved in an all-or-nothing confrontation with you, but if you think he's going to call with some marginal holding, you should fold because you don't want to put the whole SNG outcome on a single coin flip. And, even the marginal hands he might call with will usually contain two overcards.

Another thing to consider is that if he has been aggressive up to this point, there's some reason to believe that you and he can effectively work together to sort of blind out the short stacks. (I don't mean collusion.)

This has sort of been a theme lately: we "know" big stack shouldn't call and get into a confrontation with the other big stack. But, if the big stacks are going to call a wider range than we think they should, we have to adjust our pushing ranges accordingly.