Young Thug's brother Unfoonk was one of the YSLs to take a plea deal in Fulton County's RICO case against Thugger's crew.

Under the deal, Unfoonk was forced to acknowledge that YSL is a criminal gang and will have to testify in the RICO case if called.

The word is Thug told him to take the deal so their mother wouldn't have two sons in prison.

Shortly after taking the deal, he was caught with a gun, violating his probation.  The judge quickly gave him nine years.

This week, he sent a message to his brother from prison.

View this post on Instagram

A post shared by No Jumper 🏀 (@nojumper)

 "I promise god hear us, I wish I can call u and tell u I understand now,

Thug's trial is ongoing.  Do you think he just figured out what his plea deal entails?