Nope, give back the armor and all information involving the research, construction, and transfer of the Overlord. At this point, Svernlochian investigators are being sent to you to investigate the handling of the Overlord. You are technically subject to a lawsuit with FTCU, but you have a few options:
1) Return all information involving illegally-obtained FCTU wares and the wares/remains of wares over to FCTU.
2) Refuse to return information and wares and:
a) Suffer a fine of $55,500,000,000.
b) Governmental takeover - You become a puppet government of Svernloch until the money is paid back. Wares are immediately confiscated.
c) War with Svernloch/FCA.
d) Execution of leader and trade officials.
Refusing to return all of the information and wares will result in sustaining the previously said charges and consequences. All charges and consequences will be dropped if the information and wares is returned to Svernloch. However, a private Svernlochian investigator will remain to monitor your markets for any future illegal purchases.