[@Blade17]I'm going to have a character stop you from removing the ring.  Removing the ring without the help of a Blue Lantern is almost always fatal (I think Supergirl survived because she was near a yellow star at the time).  Even with the fact that you just killed someone, they won't want you to kill yourself, and don't expect Ghost Rider to know that.

From the Wiki:
"The Red ring replaces the heart of its bearer, rendering it useless. The blood spoils, and the ring expels it from the bearer's mouth in a vomit of violent rage. A Red Lantern's veins stretch as they fill with the liquid fire of the red light. It is possible for the bearer to recover from the physical transformations that come with wielding the rage of a Red Lantern ring, but apparently only through intervention of a Blue Power Ring, or if the user experiences a great enough hope to overcome their rage, acting in a vein similar to that of Blue energy."

In Ghost form he wouldn't really need a heart or blood, but once he returned to human form it would kill him.