I've felt the rear wiggle a bit while downshifting during heavy braking. I'd imagine if you're weighting the inside peg while braking heavily the rear would step out with a pretty slight touch of the rear brake.
Depending on tire wear, tarmac conditions and bank angles you can be correct. But that's an opportunity in the making: you need to keep your body weight forward & your shoulders relaxed with a light hand(s) on the grips [this is critical].
Gently with a controlled manner roll the throttle on - DO NOT SNAP THE THROTTLE CLOSED. The rear tire is now steering the direct of the bike in a lovely controlled slide. When you hit the apex you can now roll on the gas even more. What this does is give you 2 - 4 bike lengths going into the straight on the fat centre part of the tire where you have max traction.
Otherwise, you come out of the corner leant over on the skinny side edge of the tire with substantially less traction, and... The possibility of either running wide, or momentarily slipping, sliding & low siding. Or even worse, after skating on the tarmac, you slip again and regain traction which results in a highside.
You MUST be patient and well rested with your head in the correct space.
That's why the greats (Roberts, Rainey, Doohan, Rossi to Marquez) all practice on the dirt where sliding both ends is not only common practice, it's quite literally necessary to ride quickly. It gets easier the more you practice it. My advice is to do this at the track first - in a controlled environment with CLEAN pavement. As you get more comfortable, you'll be fine on remote roads of wherever you live.
NOTE: Do not practice this in built up areas. If L.E.O. catches you (s)he will throw your arse in the lock up & you'll be banned.