1999 Toyota 4Runner Rear Diff

I believe the clutch is going out on my 4 runner, because the engine is surging while driving and the fuel system seems fine. But my question is relating to it. When the clutch is going out, can it cause the rear differential to "stick"? Sometimes white starting out, it seems to lock up. I have you give it some extra power and them it releases. It is usually a pretty loud pop when it releases. Please let me know what you think.

Thanks,

Jeremy