I doubt if it will get to the convention. The super delegates will step in and select Obama...I think you are right about the SDs stepping in, but I look for Hillary to be the choice. She can claim she has won the primaries in the larger states that the Democrats have to win (CA, NY, NJ, TX, OH, and should win PA) and that will sway their votes to her.
If they step in and steal the election for Hillary, they will alienate black voters, the Dems most loyal constituency, not only for this election but for many more elections to come. The Dem Party would be committing political suicide. It ain't going to happen. The SDs will vote for who has the most pledged delegates thru the primary process.
FYI: The Dems will win CA, NY, and NJ regardless of who their nominee is. They don't need TX to win.