What should I do ?

Choices Do nothing and hopefully never get arrested Hire lawyer Turn yourself in

That doesn’t say charges. Look him up on corrections website

Can an appellate court remand back to lower tribunal, allowing further new arguments to be presented?

Google the Tipsy Coachman rule. You also can use scholar.google.com

You can file whatever you want. Whether it will be accepted, is another story. What I do not see is that you have recorded any of these...

How do I find out what a petty theft charge is about?

I agree with my colleague. There are many defenses if you had never been advised of the charges. You can look at this case where I won as one...

How do I go about getting a restraining order on someone who is about to be released from prison?

It is the same way as you would fo it otherwise Go to the courthouse and seek a restraining order

I got evicted but never went to court, I can’t find the file on the MyCase website. Do you know how I would be able to find it?

Contact the clerk's office .

Is it possible to appeal a dismissed case, even if both parties made a agreement?

I agree with my colleague. It sounds like sour grapes and buyer's remorse

What happens to a vop if the new charges are never formally filed

Changing to proper category of criminal defense. These issues should be discussed with his attorney

What else can I do after appeal is affirmed?

You could seek review for incompetence of counsel except you cannot do that when you represent yourself