no doubt, he wasn't trying to step on his foot but you know they are gonna say he shouldn't have even walked up on him like that anyway...
Shaq brought up a good point though, if a person is falling and can't use his hands to break the fall, the chest is the next best thing and he chest bumped him. After the game, Rondo said "he wasn't trying to bump him" but the motion of pulling his shoulders back just before contact made it look intentional.