I've already checked Rules and FAQ pages. Didn't find anything useful about this case on the FAQ page. Thanks for the link though!

However, rules page had some coverage about this, also the reason I decided to bring this to the forum:
What if I disagree with your rules?
Discuss it on the forum and explain why. We're always open to suggestions and welcome intelligent discussion. If enough people hate something maybe we'll compromise... it's already happened.
Glitches: Many speed runs utilize glitches, unintended side effects of the game's programming, to their advantage. There are some glitches which won't be allowed, though: generally any glitch that allows you to leave the normal bounds of the game world or to magically teleport between distant locations will be forbidden. Anything involving removing or altering a game disc/cartridge or files while the game is running is forbidden. Probably any other glitch will be allowed, but exceptions might be made on an individual basis. Runs using borderline glitches will probably be allowed in separate categories from runs that don't use them.
So, there is no clear rule for this case, the fallout 1 run.
It abuses a bug/glitch which allows to make significantly faster/riskless run than would be possible without utilizing the bug in question.
This should be noted, since it's pure speed run and this glitch makes it faster by making otherwise impossible options possible: skipping the fights in mariposa military base and random encounters.
Compare to the fallout 2 run, where the runner had to raise his outdoorsman skill to avoid random encounters and plan his route so he could avoid most fatal encounters. Still, he almost got killed by such encounter! Otherwise, avoiding combat wasn't such a big issue in Fallout2, but it meant a lot in the Fallout1 run. Also note that the same glitch works in fallout 2.
Can this really be considered legit run?
Your opinions, please? Any fallout fans around to bring their POV into this?