follow this steps:
1. Build a new view(name it temp or something and base it on the default view)
2. And then using explorer view, change the name of the allitems.aspx view to allitemsOld.aspx
3. Now change the name of the temp.aspx file to allitems.aspx and you should be able to get in to your library using this view.
You can now delete the old view(that didn't work).
Hope this helps!