Radio/tape Cd Player problems of the 2008 Jeep Cherokee

While traveling at 55 miles per hour on southern blvd. In west palm beach the key turned from the on to the off position. This caused a lockup of the steering and brakes. The automobile returned to full function when the key was turned back to the vertical position. There were no keys or weight hanging from the key and it just clicked off. This condition was recently repaired at arrigo Dodge on okeechobee blvd. The key now sticks in the ignition. The radio failed soon after and it was noted that fuse 27 & 28 were covered in lithium grease from the prior repair which stopped the fuse from making contact with the plug. Cleaning restored the radio function, but key is still stuck in the ignition. Later, the computer stated "key damaged".