On a 123 diff, that clip is not bad at all. I don't see why it would be any different on your car. I think I grabbed the tab with a pliers or vice grips and a sharp yank pulled it right off.

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC