Well, I'd either support it with a couple of jackalls, some timber or just pick up something heavy in the bucket before your start the disconnect process. Put a road bale or a load of gravel in the bucket that will counter balance the weight of the loader. Use a jackall or timber to support the loader in case it decides to weep down on you.
Just stay out from under or around the loader at all times, just in case, as shift happens.
You may need to bleed a little pressure off the lines to get them to plug back in. A wrench to bleed, or the jackall in part one, to raise the booms a tad to take the weight and pressure off the fittings.