ModRewrite can certainly handle draining the www from the front of my domain.
Inshtaccess:

RewriteEngine On
RewriteCond %{HTTPS} on
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

However with SSL, the certificate check comes prior to the .htaccess rewrite, leading to certificate error.
I'd rather not purchase an SSL certificate for that www simply to redirect it.
Are you able to offer us a wiser solution? (btw EV Certificates aren't available as wildcards)

You will get certificates with multiple domains inside them. Acquire one with mydomain.com and www.mydomain.com. I believe you can also buy "wildcard" certificates which will match any subdomain, however they cost a lot more.

Based on your circumstances you can consider cacert.

Once you are assured by enough individuals to gain 50 'points', you may create your personal server certs, as much as you would like.

Normaly you'll be 'assured' by someone by ending up in him/her in tangible existence, and showing some type of ID (motorists license, passport).

For more information browse the site, or else you pm me.

Inside your situation, two options show promise:
1) Whenever a secure connection is needed, connect to https://domain.com
Keeping a part of your .htaccess redirection

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

may prevent www.domain.com, and hopefully minimise https://www.domain.com
2) As others have recommended, obtain a separate certificate for https://www.domain.com
startssl.com have free certificates, appropriate for any redirection only job such as this.

Many SSL Certificate companies, including DigiCert, GlobalSign, and perhaps GoDaddy, will place the www inside a certificate free of charge like a Subject Alternative Title. What this means is the certificate is useful for both paypal.com and www.paypal.com. After that you can just forward all traffic from https://www.paypal.com to https://paypal.com.