Yes, it was an IFV.
As for more about the armor, hasn't only 1 M1A2 been destroyed by enemy action (actually a mine combined with additional 500kg of explosives including 3-4 155mm artillery shells)?
Far from it:
From tanknet:
Tank; cause and effect; location; source; date
M1A1; Armbrust s-side nb-skirt, knocked out; Baghdad; official, pictures; 23/08/03
M1A1; RPG-29 shot through the side, knocked out, sent back to US; ?; US soldier; late 2003
M1A2; IED, 240-mm mortar, catastrophic (first), 3 KIA, driver WIA; Baquba; official; 27/10/03
M1A1; IED, catastrophic (second); ?; official; ?
M1A1; IED, catastrophic (third); ?; official; ?
M1A1; RPG to side, 1 KIA; ?; official, press; 07/04/04
M1A1; RPG to turret front, frag/burns to commander/loader, gunner also WIA (?); Fallujah; press, video; 07/04/04
M1A1; PG-7V s-side glacis, burnt out; Baghdad; press, picture; 10/04/04
M1A1; multiple RPG hits, burnt out; Sadr City; press, pictures; 17/08/04
M1A1; RPG attack, burnt out, 1 KIA; Ramadi; official, press; 10/11/04
M1A1; ambushed on trailer, burnt out; Baghdad; press; 22/11/04
M1A1; RPG s-side second last skirt, mobility killed; Mosul; press, pictures; 12/02/05
M1A1; AT mine, mobility killed; outside Fallujah; press, pictures; 11/03/05
M1A1; AT mine, mobility killed; Fallujah; US soldier; mid-2005
M1A1; IED, burnt out; ?; video; ?
M1A1; IED, burnt out; ?; video; ?
M1A2 SEP; IED, knocked out; Sadr City; US soldier, pictures; ?
M1A2 SEP; RPG s-side rear-skirt, engine killed; US soldier, pictures; ?
M1A2 SEP; RPG s-side turret side, commander/gunner WIA from spall; Sadr City; US soldier, pictures; ?
M1A2 SEP; RPG-29, knocked out; Sadr City; US soldier; ?
M1A2 SEP; RPG-29, knocked out; Sadr City; US soldier; ?
M1A2 SEP; AT IED (#1), loss; Sadr City; US soldier 2004-2005
M1A2 SEP; AT IED (#2), loss; Sadr City; US soldier; 2004-2005
M1A2 SEP; AT IED (#3), loss; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG (#1); knocked out; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG, heavily damaged; Sadr City; US soldier; 2004-2005
M1A2 SEP; IED or RPG (#10), knocked out; US soldier; Sadr City; 2004-2005
M1A1; IED, ruptured fuel cell, magazine detonation; Anbar Province; US soldier, picture; summer 2005
M1A1; IED, knocked out, unknown # of WIA/KIA; ?; US soldier, video; ?
M1A1; IED, burnt out; Southeast Baghdad; press, pictures; 25/12/05
M1A1; IED, knocked out, burning; Ramadi; video; 16/12/05
M1A1; IED, catastrophic, driver WIA; ?; US soldier; ?
M1A1; IED, burnt out; Eastern Baghdad; press, pictures; 10/03/06
M1##; IED, gunner paralyzed from severe whiplash; ?; US soldier; ?
M1A1; AT mine, mobility killed; ?; US soldier, video; ?
M1A1; IED, mobility killed; ?; video; February 2006
M1A1; IED, mobility killed; ?; video; 11/04/06
M1A1; IED, magazine detonation; ?; video, press; 15/09/06
M1A1; IED, knocked out, unknown # of WIA/KIA; North Baghdad; video; 09/10/06
M1A1; IED, burnt out; ?; video; ?
M1A2 SEP; IED, knocked out destroyed; ?; press; mid-2006
M1A1; IED, ruptured fuel cell, magazine detonation; Fallujah; press, video; 05/01/07