Yeah he just lingered around and got on everyone's nerves.

Sorry to say this put I think you sound very cocky you keep saying I did nothing wrong I did nothing wrong. As other people have said shi*t happens move on. Also if the place were you pledged really tried to punish your big bro by dismissing you that is very stupid/low of them, but I don't think that was what happened. My advice to you I would say is if you really want to be in a fraternity you should just join another place and as you said you are friends with them so be friends with them and join another place. Honestly I don't think you are trying to get in to make friends but to say that you are in "that particular frat."

Look bro, if you wanna rush again, rush again.
No-one is going to stop you.

If the chapter you rushed is anything like the Phi Tau here, they wont restrict you from coming back to public events. You can also remain friends with the brothers, maybe even show up at the parties and all that good stuff.

Now for the bad news, you probably wont get a bid. I know it might sound unfair, but the brotherhood has decided. Never in the history of our house has an associate member been acceptedback after being removed from the pledge program.

But hey, maybe you'll get really lucky, who knows.

-PKT bro.