Blown motor in tynda,siberia. need advice on getting into japan.

[-Ali-]

So after finishing the bam road from bratz to Tynda i've blown my engine 300km north of Tynda. befriended a trucker to give me a lift back to tynda. I've got contacts here in Tynda so getting the bike to Vladivostock seems the easy part. (i'm also at the crossroad where i can put the bike on a train to Vanino but then we've got Sakhalin and north japan to ride with a blown motor and no power) Anyway i have a few questions.

1) My bike isn't going to pass the SHAKEN roadworthiness test, am i able to take it out of customs via a truck/ rental van if i can organise somewhere to store it in Osaka/ Tokyo, ultimatly i'm going to fix it myself and don't want to pay a mechanic. Then once put back on the road then have it inspected and registered. What does the shaken test truely involve

2) i need to leave the bike in Japan for 2-4 weeks to return to England and pick up a japanese work visa, any advise?

3) An alternative is to dump the bike here in Tynda ( only an old dommie, with more problems than just a blown motor) and buy another in Japan. I'm not bothered about getting money for the bike, just another avenue to explore. this seems like the cheapest option, i have no import documents for my second entry back into Russia only a stamp atop of my visa, is the bike tied to my visa number or is a stamp the only knowledge of me having a bike here.

I've tried to do my research previous to this post but what i need is quite specific and i haven't really found the information out there to answer my questions.

thanks for your help

Alistair