My torch has never shed, but if a section that lost it's polyps seems to be growing back I would wait it out.  With a 100% water change the water parameters have changed and the coral may just be adjusting to the new parameters.  Most corals are not as weak as many think. 
		
	
		
		
		
		
			
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				RSM 250. Clownfish,  Fox face, Blue tang, Yellow tang, Kole tang, Clown tang, Coral beauty angel, French Angel, splendid dottyback. CUC, softies, lps, sps.
			 
		
		
		
		
	
		
		
	
	
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