Ponting - can't see him losing his job come-what-may. Australia are far more likely than not to reach the semis, and can't see someone being sacked for failing to progress past the semis.
Vaughan - let's all hope he retires from ODIs in any case. If not, hopefully he might be dropped. Not sacked - dropped.
Dravid - should IMO retire from ODIs but might well not. If he doesn't he should retire from Tests soon.
Fleming - ditto.
Inzy - surely he'll retire from ODIs at the very least.
Smith - a bit worried if SA don't reach the semis, but hopefully that won't happen.
Jayawardene - should keep his job, can't see him being removed or removing himself, regardless, and SL are probably 3rd-faves at the mo.
Lara - should retire from ODIs gracefully.
That's my summation...