I collected the aidscreens, war screens, and spy screens connecting to Sedrick before the alliance war began, and sorted them all in chronological order.
That's the hard evidence. It shows that Sedrick was a happy member of TENE, selling tech to Ragnarok, on the afternoon of August 4th. Something happened between 3pm and 6pm; in roughly 3 hours Sedrick has become an MHA applicant and is being targeted by a TENE nation for spy attacks. A bit over 48 hours later, Sedrick responds by launching a war against TENE, while still flying the MHA affiliation, and then just a bit over 3 hours later he's unaligned and launches a second war.
A little bit over 20 hours later on the 7th, Ragnarok attacks him while he's flying the NSO affiliation. Incidentally his alliance seniority date is 8/7/2010 8:46:31 PM, which means that RoK attacked literally 3 hours after he'd joined the NSO AA.
The aid is sent by NSO 40 minutes after Sedrick is attacked.