[Android Software/Hacking General [Developers Only]] sweetnsour:
These are all the values I found in bools.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
<bool name="action_bar_embed_tabs">false</bool>
<bool name="split_action_bar_is_narrow">true</bool>
<bool name="preferences_prefer_dual_pane">false</bool>
<bool name="show_ongoing_ime_switcher">true</bool>
<bool name="action_bar_expanded_action_views_exclusive">true</bool>
<bool name="target_honeycomb_needs_options_menu">true</bool>
<bool name="config_sf_limitedAlpha">false</bool>
<bool name="ImsConnectedDefaultValue">false</bool>
<bool name="config_sf_slowBlur">true</bool>
<bool name="config_ui_enableFadingMarquee">true</bool>
<bool name="config_closeDialogWhenTouchOutside">true</bool>
<bool name="config_wifi_dual_band_support">false</bool>
<bool name="config_wifi_p2p_support">false</bool>
<bool name="config_wifi_background_scan_support">false</bool>
<bool name="config_bypass_keyguard_if_slider_open">true</bool>
<bool name="config_automatic_brightness_available">false</bool>
<bool name="config_annoy_dianne">true</bool>
<bool name="config_unplugTurnsOnScreen">true</bool>
<bool name="config_animateScreenLights">false</bool>
<bool name="config_allowAllRotations">false</bool>
<bool name="config_reverseDefaultRotation">false</bool>
<bool name="config_deskDockEnablesAccelerometer">false</bool>
<bool name="config_carDockEnablesAccelerometer">true</bool>
<bool name="config_batterySdCardAccessibility">true</bool>
<bool name="config_use_strict_phone_number_comparation">false</bool>
<bool name="config_intrusiveNotificationLed">false</bool>
<bool name="config_intrusiveBatteryLed">false</bool>
<bool name="config_disableMenuKeyInLockScreen">true</bool>
<bool name="config_enableLockBeforeUnlockScreen">false</bool>
<bool name="config_enableLockScreenRotation">false</bool>
<bool name="config_enable_puk_unlock_screen">true</bool>
<bool name="config_enable_emergency_call_while_sim_locked">true</bool>
<bool name="config_autoBrightnessButtonKeyboard">true</bool>
<bool name="config_swipeDisambiguation">true</bool>
<bool name="config_bluetooth_sco_off_call">true</bool>
<bool name="config_bluetooth_wide_band_speech">true</bool>
<bool name="config_bluetooth_adapter_quick_switch">false</bool>
<bool name="config_voice_capable">true</bool>
<bool name="config_sms_capable">true</bool>
<bool name="config_sip_wifi_only">false</bool>
<bool name="config_built_in_sip_phone">true</bool>
<bool name="skip_restoring_network_selection">false</bool>
<bool name="config_showMenuShortcutsWhenKeyboardPresent">false</bool>
<bool name="config_telephony_use_own_number_for_voicemail">false</bool>
<bool name="config_sms_utf8_support">false</bool>
<bool name="config_mms_content_disposition_support">true</bool>
<bool name="config_alwaysUseCdmaRssi">false</bool>
<bool name="config_duplicate_port_omadm_wappush">false</bool>
<bool name="config_showNavigationBar">true</bool>
<bool name="config_actionMenuItemAllCaps">true</bool>
<bool name="config_allowActionMenuItemTextWithIcon">false</bool>
<bool name="config_wimaxEnabled">false</bool>
<bool name="config_forceDisableHardwareKeyboard">true</bool>
<bool name="lockscreen_isPortrait">true</bool>
</resources>

A few months ago, I tried doing this (enabling lockscreen rotation) and all I got was a lockscreen that could rotate. What I did notice, though, was the third statement:

<bool name="preferences_prefer_dual_pane">false</bool>

Maybe you set that to be true on accident? Can you decompile your modded framework-res.apk and post all of the values in bools.xml?