In my opinion, it is quite possible. Consider this quote from today's testimony.
Susan Clairmont ‏@susanclairmont 1m1 minute ago
Now the other side of same glove seized from Millard on arrest. Blood stain that was insufficient for DNA testing.
Susan Clairmont ‏@susanclairmont 16s16 seconds ago
Now second glove. Stains from three individuals. Cannot get a DNA profile.
end of quote
If it meant 3 blood stains from 3 different individuals, it could be from WM, LB, and TB. If it meant 3 different dna traces that were stained to examine them, then it could mean that 3 different individuals wore those gloves. Can anyone else add more clarification ? I am not a forensic specialist.