Until Robinson fumbles or repeatedly gets stuffed, why would they change anything?
Robinson has repeatedly been stuffed since the Philidelphia game that's my point. They've already started throwing more in the red zone, so things have already changed. As the schedule eases, I think the 49ers take the opportunity to let Gore gain his confidence back so he can become the complete back he can be.Edited to add:
Michael Robinson's stat lines since the Philly game:
@KC
ATT YDS TD LG
4 13 0 4
3.25 YPC
1-10-KC48 (2:47) M.Robinson up the middle to KC 45 for 3 yards (D.Johnson, J.Reed).
2-7-KC45 (2:07) M.Robinson right end to KC 42 for 3 yards (D.Johnson).
2-19-SF45 (8:31) M.Robinson right tackle to SF 48 for 3 yards (K.Mitchell, D.Johnson).
3-5-SF25 (13:34) M.Robinson up the middle to SF 29 for 4 yards (S.Williams).
OAK
ATT YDS TD LG
12 21 0 6
1.75 YPC (!!!)
1-10-OAK40 (12:13) M.Robinson left guard to OAK 37 for 3 yards (T.Brayton).
2-7-OAK7 (8:16) M.Robinson up the middle to OAK 4 for 3 yards (W.Sapp).
1-10-OAK28 (4:01) M.Robinson left guard to OAK 22 for 6 yards (S.Schweigert).
2-4-OAK22 (3:22) M.Robinson up the middle to OAK 21 for 1 yard (R.Thomas, K.Morrison).
4-1-OAK19 (2:08) M.Robinson up the middle to OAK 19 for no gain (S.Williams, W.Sapp).
1-4-OAK4 (13:01) M.Robinson left tackle to OAK 5 for -1 yards (W.Sapp).
2-5-OAK5 (12:15) M.Robinson up the middle to OAK 2 for 3 yards (S.Schweigert).
3-2-OAK2 (11:29) M.Robinson left guard to OAK 1 for 1 yard (K.Morrison).
3-1-OAK22 (4:36) M.Robinson up the middle to OAK 22 for no gain (A.Hawthorne).
1-10-OAK42 (2:03) M.Robinson up the middle to OAK 41 for 1 yard (T.Sands).
2-9-OAK41 (2:00) M.Robinson up the middle to OAK 38 for 3 yards (T.Kelly).
3-6-OAK38 (1:18) M.Robinson up the middle to OAK 37 for 1 yard (T.Howard).
The two TDs from the 49ers in the red zone came off pass plays:
Arnaz Battle, 4 Yd pass from Alex Smith (Joe Nedney kick is good), 7:26. Drive: 12 plays, 72 yards in 7:34.
Arnaz Battle, 6 Yd pass from Alex Smith (Joe Nedney kick is good), 12:25. Drive: 3 plays, 9 yards in 0:57.
SD
ATT YDS TD LG
1 2 0 2
2 YPC
1-10-SD26

11) M.Robinson right guard to SD 24 for 2 yards (S.Cooper, I.Olshansky).
The two TDs from the 49ers in the red zone came off pass plays:
Bryan Gilmore, 15 Yd pass from Alex Smith (Joe Nedney kick is good), 9:00. Drive: 5 plays, 74 yards in 3:00.
Moran Norris, 2 Yd pass from Alex Smith (Joe Nedney kick is good), 3:32. Drive: 6 plays, 74 yards in 2:48.
I really don't think Michael Robinson is a threat to Gore's goal-line looks. If anyone is, it is the coaching staff, but I have to believe that a rebuilding team would want to give their main back every opportunity to become an every-down back.