I understand that Jorge Cantu and Wes Helms are playing 3B fairly well, but did you forget about Dallas McPherson at AAA? He has 21 home runs this season and a .400+ OBP. I'm sure that Cantu could play some corner outfield if necessary?
Is Ross Wolf going to get called up soon? Sure, it has been only 10 innings since coming off of the DL, but a 1.03 whip and a 1.69 era this season...Pretty impressive thus far. He doesn't walk people so that's a plus as well. He competes on every pitch and won't give in.
And I think Maybin should be forgotten until September...He's only in AA...What's the rush?