is this a window regulator problem?

[Jinster]

Hey guys

I have searched the forum and have come to the conclusion that I have a problem with the window regulator. But before I go ahead and buy the regulator assembly, I just want to make sure that's what this is.

My driver side window just suddenly failed.

It is stuck in the fully up position. It doesn't drop with internal door handle pull, or external door handle pull, or unlatching of the convertible top. If I press the window button, I hear a whirring noise from the door, but the window doesn't drop.

Does this sound like a broken window regulator problem? Thanks.