Adobe Premiere - Razor Tool screws up clip
The problem is not the razor tool.  You must have slid the contents of the part you razored back in time using one of the other tools.  The easiest way to recover is to undo the edits or to simply drag out the original again.  The razor tool is completely non-destructive, so it hasn't altered your original video at all, just the parts of the video in your sequence no longer line up with the actual time things occurred.  

It's worth noting that as a matter of technique, it's generally preferable to open a source clip in the preview window and use the In and Out points to choose just the part of the clip you want to bring over and then assemble clips together.