Is it permitted to threaten someone with a lawsuit in order to get them to drop criminal charges?

Yes it's legal. yoi don't have the ability to drop the charges though. If he sues you, hire a lawyer.

Can he get arrested anyway ?

Of course. Once the crime is committed, there is no undoing it.

Got a 5 points tel use ticket in NY on my NJ driver license, how many point will be transferred from Ny to Nj license?

I believe 2 but you should repost on a nj forum.

I was placed into PTI in 12/07 for felony grand theft in FL (dismissed). Should I have my record expunged? Is it worth it?

You need to ask this on a FL forum. No NY attorney, or very few, will know anything about expungement in Florida. Especially since ny doesn't have...

What is the law about questioning a defendant while under the influence of drugs or while suffering from hallucinations

Any statements must've been voluntary and knowing. Perhaps there is an argument to suppress his statements, but merely showing he was high won't be...

Is there a legal way to have the online newspaper article regarding arrest be removed as the case was dismissed ?

As long as the information in the article is true and factual, there's nothing you can do.

Can charges be pressed?

Age of consent deals with sex and sex only. Sexting is not sex and therefore not relevant with age of consent. Also, you're in texas meaning that...

Arresting Officer Found To Be Drunk The Night Of My Arrest. What Can I Do ?

Same thing if they werent made up. You need to hire an attorney. This isn't going away on its own.

File a police report. They may take action, they may not.

I have two felony convictions from 23 years ago that I know cannot be expunged. Can I get a pardon?

The chances of you receiving a pardon for a violent felony are slim to none.