PACKET SENDING?

It might work if you can inject it into your client, so their servers think they're receiving packets from the client.

I think they have client v. client packet checking, if your client doesn't match up with everyone else's it will dc you.

Other Threads already explained that packet editing doesent work....

What if all 5 clients sent the same packet approximately at the same time?

you would need all 10 clients and a view client to send the same packet...
(view client is a scripted server-sided client...so they can check for stuff like this. brought it up with a programmer, he then told me he had no idea what the protection status of packet swapping was, so he referred me to another, who gave me a brief talk-to about it.)