After Buck shoots Sherese, he leaves her knocked out on the ground and heads around a corner where Quince, Kellogg and Varek are on higher ground. After going back to where he came from, Varek is waiting there for him and after the scuffle is over, Sherese is meeting up with them, as though she had never been stunned.
Varek's ability to alter his molecular structure would only include his organic matter, such as skin, bones, and organs. It would not include inorganic matter such as his clothing. Hence, whenever he uses his power, his clothes would fall off of his body.
Wires are visible when Buck is telekinetically lifted into the air by Quince.