Yeah, I learned most of that song by ear too. I think I know what part you're talking about. What I do for learning fast phrases is load the song into Audacity and slow it down by the percentage I need (without changing keys)...just another way to do what that trainer does.

Also, there's these 2 Powertab versions...both show that part the same:

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--4----------------------0-2-3-4-5----
----------------0-2-3-4---------------
-------0-2-3-4------------------------