Has this changed recently?
I must admit I didn't realise the peeling off player had such a big area to move in ..... until I just read 19.12(b).
Until now, I assumed he had to stay close to the Lineout - it would certainly look wrong to me if he peeled off in a huge arc 9.95m from his LOT, ran behind his SH, only to run 9.95m forward again before he's even crossed the gain line, but the law does allow it.
19.12 PEELING OFF
(b) A player who peels off, must stay within the area from that player’s line of touch to 10 metres from the line of touch, and must keep moving until the lineout has ended.
Sanction: Free Kick on the 15-metre line, in line with the line of touch.
You learn sumfink every day eh?