you can go to Bahrain now, no problem just take the old route and not the new one.
Park your car in Bahrain. I don't think that there is a problem in parking your car there. You can ask a few people and they will guide you in this matter.
then from Bahrain, take car (non custom paid) they are usually 98 model corolla hatchback's with 1.5 litre engines and raised shocks and tall tires. You have to pay them 4,000 and they will take you to Kalam till Ushu Glacier and also you will pass the forest too.
please note that you should leave early . 7 - 8 am is the best time for it. 3.5 hours are required till Kalam and more if you go forward. I think that Mahodand will be accessible now. Try to come back before dark as car driving in dark is dangerous / very difficult and not advisable even for the jeep drivers, in the current road conditions.