John's advise is sound. I will throw out another scenario for you to consider.
If this bucks feet are bad enough that he does not want to get up and feed, water etc. that may be effecting his antler development more than the "stress" of sedation and a trim. This procedure can be performed in under five minutes. With the proper dosage of MK or BAM the animal will be back on his feet in no time. Pictures are always the best way for us to ***** things. I say if they are bad, bad is the key word, knock him down. It suck that you have to do it now but a health deer is better than one that can not get around. Best of luck.