Burnt transmission?

Just my luck, headed to HMT at the end of the month and decided to change the fluids. Oil and different were fine, Trans different story. I removed the fill plug then the drain plug and barely anything came out. The crap that was on the drain plug was a real thick sludge felt like grease. Of course on the drain plug was some metal attached to it. Mind you that the bike was ridding great before this no issues what so ever. Tried to add some fluid just to help with the lubrication till I can get it fixed but the damn fill hole won't except anymore fluid. Anybody have this happen before? How long do you think it will last. I HAVE to go on this trip as quite a few friends are counting in me. I know no one can predict the future but do you think it will last till I get back? Was also thinking about trying to slam some ATF in there since it has all the detergents in it maybe that will help clear it up but then again could screw more up as well. Suggestions please!!!! Thanks all!!