I never found anything at all objectionable about your deepstriking in a DN, thought it was a damn good idea actually. I think the thing that gets folkes riled up is when you logg off behind enemy lines or self destruct to get back home. Neither breaks any rules yet I personally choose not to do either.
In both cases you are denying those "hunting" you chances to track you down, it is usually a matter of time before you are caught unless you get back, although catching a deepstriker doesn't always mean a dead deepstriker. Self destructing is also often percieved, rightly or not, as a deliberate attempt to prevent a damaged ship from being caught and killed for VCs.
I think in the future, that logging off behind the lines in a VC ship, self destructing behind the lines a vc ship, or dying to ai in a vc ship while deepstriking, might be considered as giving up the vcs. An exception should be made for computer difficulties such as ISP issues and server outages. Additionally I believe that if there is lag an offer be made to redo the mission in the same hex with the same opponent in the case of a deepstrike (that one occurred to me last night) Yes I know that ups the ante making the risks greater, but thats why the deepstrike is so much fun and so addictive.