Causing an intentional lag to a player or on the servers in any fashion will be treated as Bugusing. Using any methods to prevent a player to send, recall or slow his fleet is forbidden.
6 seconds to save is tight, but possible, so those probes in those 6 seconds might have prevented Blackhawk from doing anything to save his fleet.
I don't believe he'll make an issue out of it, so have fun with the profits, your timing was great, and it took a lot of effort to get the right time. But please try not to kiss your asses too much.