the key wont come out of the ignation
the steering wheel has to be just so, and needs to rotate around till it is 'parked'- try makin it straight up and down, turn the key back and turn the steering wheel until it turns all the way back and releases your key.
Same happened to me in my 99 explorer. It's a sign the tumblers are getting worn. The locksmith told me individuals who keychain looks like a jailers from Alcatraz suffer most from this problem. He suggest not placing every other key you own on the same ring with the ignition key. Anyway, changing the cylinder is no big problem. Unless there is a chip in the old key, then the lock and new key will have to be programed. One note. On the 95's if you opened the door from inside, slam it then re-enter you will have to recycle to door locks to open-lock-then open for the vehicle to start. The locksmith kept re-programing the key because it would not start after programing. While he sat behind the wheel scratching his head, I took the key fob, cycled the lock-unlock, and it started right up. Seems the procedure is unique to 95 ford products.
correction - 95 explorer
Looking for a Used F-150 in your area?
CarGurus has 203,564 nationwide F-150 listings starting at $1,273.
Search Ford F-150 Questions
Ford F-150 Experts