On Coruscant? Were you pushing them off with the Force? If so, then...you used the "Iamobi" or "iamquigon" cheat, yes? (If not, then jump down to the end of this post
We didn't test any of the non-Jedi levels for use with the Jedi. Seriously, the "iamobi" cheats etc. I thought were gonna get yanked...it was only at the last minute that we realized that they were going into the final burn. At that point, there was no use in re-testing the levels and making changes specifically for the non-primary level chars when the levels were built with the primaries in mind.
So yes, it's a glitch, but if you use a cheat, do so at your own risk
BTW, if you didn't use the cheat, and somehow pushed them off using Panaka, then I'd love to hear how you did it - I thought the characters were immovable. Although, wait - if you used the hand-to-hand, then I can't remember if the other characters get moved that way.