Great, I'm f*cked...Threw a rod...(bearing)

Stroker, your kidding, right? The tabs lock the bearing against the non machined mating surface. If they just laid in there with no positive lock mechanism, they would all spin.
If you are up to it, stake the rod side bearing with a pin, like a piece of a drill bit. Drill out about 5mm deep and hammer the next size drill bit in there and then grind almost flush, leave enough to catch the same sized hole in the top of the bearing, dont worry about the bottom, it aint goiing anywhere. You are doing this on your driveway right...with a time limit? Think of a derby car between rounds.. Just get 'er done!

No, I'm not kidding. The tangs have nothing to do with keeping the bearing in place. Nothing. Several car companies make engines without locating tangs. Bearing CRUSH is the only thing that does it. Here is a good read on it.

http://www.enginebuildermag.com/Article/68208/get_your_bearings.aspx

They are LOCATING tangs. Nothing more.