I tried a WILD this morning and got to SP, but then my eyes started shaking and they ended up opening a bit on me; luckily I had a sleeping mask on and the lights were off, so it didn't impede my attempt, but I was woken up from my dad closing a heavy door downstairs.

For my question: if one's eyes sometimes open because of REM during WILD attempts, does this mean they also occasionally open when you fall asleep normally/unconsciously in REM?