No. He has already begun a full attack, which is a full round action taken on his turn. When his turn ends, so does the full attack action.
No.. your attacks are used on your combat phase. once that phase is over, so are your attacks. You can't "bank" unused ones.
The only attacks you can make outside of your initative are AOO's and only one of those per round, unless you have Combat Reflexes.
In this situation you can delay and wait for more to come near so you can make all your attacks.
In this situation you can delay and wait for more to come near so you can make all your attacks.
If you mean "after attacking twice, delay to use the remaining two attacks", then no you can't. Delay is an all-or-nothing.
By choosing to delay, you take no action and then act normally on whatever initiative count you decide to act. When you delay, you voluntarily reduce your own initiative result for the rest of the combat. When your new, lower initiative count comes up later in the same round, you can act normally. You can specify this new initiative result or just wait until some time later in the round and act then, thus fixing your new initiative count at that point.
You never get back the time you spend waiting to see what's going to happen. You also can't interrupt anyone else's action (as you can with a readied action).
If you mean, just delay till they've conveniently surrounded you, Orcs are sufficiently intelligent to realize you're doing that and the GM would be fair in adjusting their tactics to thwart you.
What do you mean? The orcs just think they have the jump on the guy and go and surround him and try to pummel him to bits. And it's not like you're needing to get surrounded multiple times in a fight, once they realize that you chilling out there is a trap it would be too late. Surrounding a target and ganging up to drop someone is the best tactic.
In this situation you can delay and wait for more to come near so you can make all your attacks.
If you delay, they get to act first. If you ready an action, all you get is one attack.
If you have only taken one attack out of your full attack action, you can change your mind and take a move action instead. Once you have taken your second attack, though, you are committed for the full attack action, whether you use all your attacks or not.
However, after your first attack, you can only take a move action. Since readying an action (e.g., to attack when the orcs come up) is a standard action, you still wouldn't be able to "hold" the rest of your attacks until the enemy closes. If you had some feat or ability that allowed you ready an attack as a move action, then you could choose to do that after your first attack.
I'm not aware of any trick that would let you do this.
You can delay. But then all the orcs will get to attack you first. And then get slaughtered by you.
If you ready, you only get one attack Scott. But you can take it before the recipient attacks, depending on the chosen trigger.
No, you can't, because martials can't have nice things.
On topic:
Delaying is usually bad, you get only 1 attack instead of full attack.
If you attack once, and there's nothing else to attack, you could theoretically move (but not attacking again), if you already moved, that's it, your turn is done.
As has been noted, you can't "delay" one attack of a full-attack. You either delay all of them, or use them all on your turn. You could ready a single attack, but once you have multiple attacks that's a bad trade.