Right now I'm a registered Republican. I did so just to vote for Ron Paul. Will I be trapped in the GOP after the primaries? Or will I be able to switch back to Libertarian? I don't want to stick with a big government, pro-war party

I had decided that principle overrides party when I switched for Ron Paul, but I don't plan on becoming active in a party that advocates for illegal war crimes all over the world, so I do plan to return to affiliation in the LP.
I want to just vote for Ron Paul to give the Republican establishment a slap in the face. It's too bad NJ doesn't have an open primary. I thought about running for office as a GOP, but why run in a party that would boo me off the stage for saying we need to come home from Iraq? It's like running as a Democrat and saying you want to cut some government programs on stage lol. You're going to hear some boos, because the party isn't for you.