We were fighting something last weekend (umber hulks, I think) and they could put an effect on us that gave us -2 to defenses(save ends). This effect was an escalating effect (I'm not sure that is the official term) where if you failed your saving throw it became -2 to attacks and defenses and you are dazed(save ends both). (I probably don't have all the exact details right, but you get the idea.)
Would the effect escalate when the cleric or warlord granted you an extra save? I realize the rules as written say "on a failed save", but did they mean to include those?
If it does, why would that make sense? (and I realize that not all game mechanics need to make sense!) I can understand the rationale for when you fail the save at the end of your turn: "this has been affecting you for your turn, you haven't shaken it off yet, therefore it gets worse." But why would it escalate mid-turn if you got an extra chance to do something about it? It makes more sense to me if the effect escalates at the end of your turn if you are still affected by it.
The wizard spell Sleep is another basic example where dazed(save ends) becomes unconscious(save ends) on the first failed save.