You'd need a 3-pole switch, which is a real oddball. 4PDT switches are available, but not real common.
A simpler solution is use a double-pole switch to short out the capacitors, and a separate switch to interrupt the remote signal from the amp.
If you insist on having only 1 switch, you could do it this way...
A double pole switch - one circuit runs a DPDT relay, the other circuit switches your remote. The relay contacts would short out the caps. Or, use a SPST switch and a 4PDT relay...
You get the idea. You need 3 switch circuits total.
1999 Buick Park Ave Ultra
Head Unit: JVC KWHDR720
EQ: Audiocontrol EQL
Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
Sub Stage: Boston G3 10", 0.5 cu ft sealed
Amp: PPI Phantom 900.4
Rear Fill: Boston SE953 6X9's