U can not reconnect it, but u can find it and stop it
select * from fn_trace_getinfo(0)
u can find traceid and to stop run below:
sp_trace_setstatus [ @traceid = ] trace_id , [ @status = ] status
0 - Stops the specified trace.
1 - Starts the specified trace.
2 - Closes the specified trace and deletes its definition from the server.