In practice, it may not be possible. No one has ever been severed twice before (I could be wrong, though). The first time someone is severed, it's usually pretty emotionally disturbing.  The second time could be worse, since they lost the ability, got it back, then lost it again, which could have even greater reprocussions on the person who was severed.
Nobody has been severed twice before because nobody could heal it until now. I know being severed is VERY painful (physically). Then the emotional problems stem from the fact that you have to start coping with the fact that you can never embrace the source again.
I think largely the emotional problems could be skipped over if you knew you were about to be healed again. Before, being severed was a hopeless situation. Especially if the wait isn't long. For example; Siuan travels to the black tower to try to regain her full strength. They sever her only moments before they heal her back to full potential. The pain is excrutiating, but lasts only an instant. In moments it's all over. A small price to pay for that much power...
Just playing Devil's advocate here. Keep 'em coming.
			Just for fun... Siuan's ability in the power...    - 11/06/2010 06:41:44 AM
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	         - 11/06/2010 06:41:44 AM
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 - 11/06/2010 06:41:44 AM
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	         - 11/06/2010 06:41:44 AM
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			Re-severing may not be necessary
	    
	         - 11/06/2010 01:24:26 PM
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			More
	    
	         - 12/06/2010 08:15:27 AM
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			That probably depends on if you think of severing as happening always at a single point.
	    
	         - 12/06/2010 03:07:43 PM
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			In theory, it seems possible.
	    
	         - 13/06/2010 12:05:24 AM
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			Re: In theory, it seems possible.
		
	         - 13/06/2010 04:17:53 AM
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			I think so. Esp. with Eldrene, Lews Therin and what we learned from Elayne's "unravelling" incident
	    
	         - 13/06/2010 07:38:52 PM
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			Robert Jordan once said it may be used as a plot point.
	    
	         - 17/07/2010 10:46:24 AM
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			I'd like to see them re-healed.  It would be a good way to prove to the AS that men are equal
	    
	         - 17/07/2010 03:31:24 PM
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