[xmonad] terminal that can handle being resized?

I'm using one of the standard layouts, where one window is bigger than all the others, which is great, except my terminal emulator (xterm, tried rxvt too) doesn't handle being resized very well. It starts wrapping at the new width (also great). My problem is that when a window starts out big, then gets shrunk and restored to its original size, all the old lines are truncated at the small width. the rest of the window is blank. is there a terminal that can handle being resized better, or a config option for either of these? or is there a way I can get xmonad to ask the window to redraw itself? thanks -matt