That's why you should always have some suicide potions or "Potion of ravage health" in your inventory when you play pvp in ESO.

It helps with the "infight bug" in Cyrodiil too. Make sure you don't have skillpoints in the alchemy passive "snakeblood" (Reduces duration of negative effects in potions by 100% when consumed.)

I always send some pots to stuck players, even when they are playing for another team/alliance. They probably can't use it right away, because when you are stuck in the ground/walls/ceiling and stuck in combat at the same time, you can't open your mail. Sometimes you can still trade directly with other players when they are stuck, but most of the times you can’t reach them.

Depending on your build it can take forever to die (too much health or health recovery). Skills like Equilibrium (mages guild) and Siphoning Strikes (nightblade) can save you some time.

ESO might be the only game where you can make friends by telling someone to kill themselves... Just be clear what you mean, otherwise they might be offended/sad/hurt and maybe even report you and get you banned.