speedo shaft..missing??

[crotchrocketony]

ok Im still going over my car after I had a shop pull my trans and replace the tube seal in the front diff..... The speedo didnt work after i picked it up. I pulled the sensor and the small shaft with the t shaped head.... WTF there is nothing under it!!! I took a look at a extra front diff I had laying around and I cant see how it could pushed all the way in with out hiting the ring gear and blowing my front diff to parts! My speedo worked on the way to the shop...and didnt on the way home... but did work one day for about 30 seconds...weird! Anyone seen this before? Now im worried to drive the car... but I have put 4 or 5 thousand miles on it since I picked it up... no noise in the diff.... once again I must say WTF!