Yep! We also did this last week. 6 of us have tickets on MDE, only 3 of us went to the parks. Made FPs for all of us (2 different sets). So we were able to ride Soarin w/ FP then go right to TT w/ FP too. I made Soarin from 9-10 and TT from 9:30-10:30. It was a little risky just giving us a half hour window, but it worked.
I felt a little guilty about doing that, but it was the only way we were going to be able to ride both since we were at Disney for just 2 days. I only did it for Epcot due to the tiers