You can, just swipe them left or right to dismiss.
I think stang64 is talking about long pressing on the home screen in order to add widgets, not the home button that brings up the recent apps menu.
I like Ics on my Razr so far. One thing I don't like is that long pressing on a home page brings up menu for wallpaper only and not to add apps or shortcuts like GB. Am I right or wrong?
You're correct. Long pressing on the home screen is just for changing wallpaper with the ICS update. Now you add apps and widgets to your home screens from the app drawer. When you open the app drawer, you'll see Widgets listed at the very top. Tap on that to see your widgets. To add either to a home screen, just long press and then place.