Maxoil

So i was changing the gear oil in my front pig when i noticed that my rear pig had gear oil everywhere yesterday. After i cleaned it up and noticed that it was coming from the yoke so I figured it was a bad seal. So today i bought my new seal and took my drive shaft off. The yoke going right into my rear diff is what im concerned about. It seems loose, i can slightly push it in and out and rotate it left to right a little. It seems to me that something is majorly wrong than just a bad seal. I do not know if it is suppose to be like this or if i have a real issue on my hands. Please help me. Thank you.

-Max