First why Archer so tough Xindi in that espidoe. Even after that Xindi carry out stun that he carry out he still been extrealy usfule. The amount intellegnce could give Starfleet would been great deal he know longer Xindi specials and know information expeasive both would been high value. If I was Caption Archer help him escape with out secound though. So why Archer so tough or not readly help him escape when found out that what wanted. It make no militery sense.