#2
Probably trills (not sure about the name) while sliding the detached whammy arm up the string. They seem to do that trick quite often.
#3
Yeah it sounds like either that or sometype of slide with a continous combo of trills.....sounds kinda cool...have you tried looking up the tab or trying to find a live performance on youtube....

Wonder how you would do that on guitar hero? HAHAHAHA!!!!
Fender 70s Ri Strats w/various Dimarzios
Modded 1982 Marshall JCM800 2203

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Check out randy dobsons underground ,tell me what you think