The command forcetapout handles this, you can bind it to keys so you can tap out immediately
I suggest binding it to your jump key, so there is no delay when you want to tap out right away!
examples from my cfg:
bind SPACE "+moveup; forcetapout"
bind c "kill; forcetapout; vstr fps"
Just keep in mind when you're jumping and you die while holding space you might tap out by accident!
cheers