Here is the play by play from CBS. According to this the ball was moved to the 16 yard line which coincides with the grounding call.
Cleveland Browns at 07:10
1-10-CLE44 (7:10) C.McCoy pass short right to M.Massaquoi to PIT 44 for 12 yards (W.Gay).
1-10-PIT44 (6:35) M.Hardesty right guard to PIT 39 for 5 yards (J.Farrior; J.Harrison).
2-5-PIT39
(5:59) C.McCoy pass short left to M.Hardesty to PIT 34 for 5 yards (I.Taylor) [J.Harrison]. CLV-C.McCoy was injured during the play. CLV-A.Smith was injured during the play. PENALTY on PIT-J.Harrison, Roughing the Passer, 15 yards, enforced at PIT 34.
1-10-PIT19 (5:38) M.Hardesty left guard to PIT 18 for 1 yard (J.Worilds).
2-9-PIT18 (5:01) S.Wallace pass short right to E.Moore to PIT 5 for 13 yards (T.Polamalu).
1-5-PIT5 (4:18) (Shotgun) M.Hardesty right guard to PIT 6 for -1 yards (T.Polamalu).
2-6-PIT6
(3:35) C.McCoy pass incomplete short right. PENALTY on CLV-C.McCoy, Intentional Grounding, 10 yards, enforced at PIT 6.
3-16-PIT16 (3:19) (Shotgun) C.McCoy pass deep left intended for M.Massaquoi INTERCEPTED by W.Gay at PIT -4. Touchback