Hi and welcome to JA. Ray here to help you today.
I am so sorry for your situation here.Let's go through these.
Did the attorney likely use the check information from the checks I was writing to seize my $?
Yes you should close the account of just not deposit funds.Send money order or cashier's check, thats exactly how they did it.
If I closed my current bank account and stopped paying what would the attorney do?
They may harass you a bit, possible to sue you here.
Is there an SOL?
Yes but a new one likely started when you signed repayment agreement.That is considered a new agreement/contract/ with new SOL
Can the attorney find "a new" checking account, savings account?
They can it might take awhile.They usually look through credit bureau. If you can go cash only here or put account in someone elses name that protects you.
Can the touch my 401k?
No , but if you withdraw and put it in a bank account then yes they can garnish the account.Looses protection once it is deposited.
If I had a home in my name can they put a lien on it?
If they sue you and get judgment it liens any real property in your name.
If I had a car in my name could they?
They are not likely to try and get after a car here unless it is a rolls or something of high value.
I appreciate the chance to answer your questions.Thanks again.